JTable (Java 2 Platform SE 5.0) (original) (raw)

javax.swing

Class JTable

java.lang.Object extended by java.awt.Component extended by java.awt.Container extended by javax.swing.JComponent extended by javax.swing.JTable

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, EventListener, Accessible, CellEditorListener, ListSelectionListener, TableColumnModelListener, TableModelListener, Scrollable

public class JTable

extends JComponent

implements TableModelListener, Scrollable, TableColumnModelListener, ListSelectionListener, CellEditorListener, Accessible

The JTable is used to display and edit regular two-dimensional tables of cells. See How to Use Tables in The Java Tutorial for task-oriented documentation and examples of using JTable.

The JTable has many facilities that make it possible to customize its rendering and editing but provides defaults for these features so that simple tables can be set up easily. For example, to set up a table with 10 rows and 10 columns of numbers:

  TableModel dataModel = new AbstractTableModel() {
      public int getColumnCount() { return 10; }
      public int getRowCount() { return 10;}
      public Object getValueAt(int row, int col) { return new Integer(row*col); }
  };
  JTable table = new JTable(dataModel);
  JScrollPane scrollpane = new JScrollPane(table);

Note that if you wish to use a JTable in a standalone view (outside of a JScrollPane) and want the header displayed, you can get it using getTableHeader() and display it separately.

When designing applications that use the JTable it is worth paying close attention to the data structures that will represent the table's data. The DefaultTableModel is a model implementation that uses a Vector of Vectors of Objects to store the cell values. As well as copying the data from an application into the DefaultTableModel, it is also possible to wrap the data in the methods of theTableModel interface so that the data can be passed to theJTable directly, as in the example above. This often results in more efficient applications because the model is free to choose the internal representation that best suits the data. A good rule of thumb for deciding whether to use the AbstractTableModel or the DefaultTableModel is to use the AbstractTableModel as the base class for creating subclasses and the DefaultTableModel when subclassing is not required.

The "TableExample" directory in the demo area of the source distribution gives a number of complete examples of JTable usage, covering how the JTable can be used to provide an editable view of data taken from a database and how to modify the columns in the display to use specialized renderers and editors.

The JTable uses integers exclusively to refer to both the rows and the columns of the model that it displays. The JTable simply takes a tabular range of cells and uses getValueAt(int, int) to retrieve the values from the model during painting.

By default, columns may be rearranged in the JTable so that the view's columns appear in a different order to the columns in the model. This does not affect the implementation of the model at all: when the columns are reordered, the JTable maintains the new order of the columns internally and converts its column indices before querying the model.

So, when writing a TableModel, it is not necessary to listen for column reordering events as the model will be queried in its own coordinate system regardless of what is happening in the view. In the examples area there is a demonstration of a sorting algorithm making use of exactly this technique to interpose yet another coordinate system where the order of the rows is changed, rather than the order of the columns.

J2SE 5 adds methods to JTable to provide convenient access to some common printing needs. Simple new print() methods allow for quick and easy addition of printing support to your application. In addition, a new[getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)](../../javax/swing/JTable.html#getPrintable%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat%29) method is available for more advanced printing needs.

As for all JComponent classes, you can useInputMap and ActionMap to associate anAction object with a KeyStroke and execute the action under specified conditions.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeansTM has been added to the java.beans package. Please see XMLEncoder.

Nested Class Summary
protected class JTable.AccessibleJTable This class implements accessibility support for theJTable class.
static class JTable.PrintMode Printing modes, used in printing JTables.
Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer
Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy
Field Summary
static int AUTO_RESIZE_ALL_COLUMNS During all resize operations, proportionately resize all columns.
static int AUTO_RESIZE_LAST_COLUMN During all resize operations, apply adjustments to the last column only.
static int AUTO_RESIZE_NEXT_COLUMN When a column is adjusted in the UI, adjust the next column the opposite way.
static int AUTO_RESIZE_OFF Do not adjust column widths automatically; use a scrollbar.
static int AUTO_RESIZE_SUBSEQUENT_COLUMNS During UI adjustment, change subsequent columns to preserve the total width; this is the default behavior.
protected boolean autoCreateColumnsFromModel The table will query the TableModel to build the default set of columns if this is true.
protected int autoResizeMode Determines if the table automatically resizes the width of the table's columns to take up the entire width of the table, and how it does the resizing.
protected TableCellEditor cellEditor The object that overwrites the screen real estate occupied by the current cell and allows the user to change its contents.
protected boolean cellSelectionEnabled Obsolete as of Java 2 platform v1.3.
protected TableColumnModel columnModel The TableColumnModel of the table.
protected TableModel dataModel The TableModel of the table.
protected Hashtable defaultEditorsByColumnClass A table of objects that display and edit the contents of a cell, indexed by class as declared in getColumnClass in the TableModel interface.
protected Hashtable defaultRenderersByColumnClass A table of objects that display the contents of a cell, indexed by class as declared in getColumnClass in the TableModel interface.
protected int editingColumn Identifies the column of the cell being edited.
protected int editingRow Identifies the row of the cell being edited.
protected Component editorComp If editing, the Component that is handling the editing.
protected Color gridColor The color of the grid.
protected Dimension preferredViewportSize Used by the Scrollable interface to determine the initial visible area.
protected int rowHeight The height in pixels of each row in the table.
protected int rowMargin The height in pixels of the margin between the cells in each row.
protected boolean rowSelectionAllowed True if row selection is allowed in this table.
protected Color selectionBackground The background color of selected cells.
protected Color selectionForeground The foreground color of selected cells.
protected ListSelectionModel selectionModel The ListSelectionModel of the table, used to keep track of row selections.
protected boolean showHorizontalLines The table draws horizontal lines between cells if showHorizontalLines is true.
protected boolean showVerticalLines The table draws vertical lines between cells if showVerticalLines is true.
protected JTableHeader tableHeader The TableHeader working with the table.
Fields inherited from class javax.swing.JComponent
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
Fields inherited from class java.awt.Component
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
Fields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
Constructor Summary
JTable() Constructs a default JTable that is initialized with a default data model, a default column model, and a default selection model.
[JTable](../../javax/swing/JTable.html#JTable%28int, int%29)(int numRows, int numColumns) Constructs a JTable with numRows and numColumns of empty cells usingDefaultTableModel.
[JTable](../../javax/swing/JTable.html#JTable%28java.lang.Object[][], java.lang.Object[]%29)(Object[][] rowData,Object[] columnNames) Constructs a JTable to display the values in the two dimensional array,rowData, with column names, columnNames.
JTable(TableModel dm) Constructs a JTable that is initialized withdm as the data model, a default column model, and a default selection model.
[JTable](../../javax/swing/JTable.html#JTable%28javax.swing.table.TableModel, javax.swing.table.TableColumnModel%29)(TableModel dm,TableColumnModel cm) Constructs a JTable that is initialized withdm as the data model, cm as the column model, and a default selection model.
[JTable](../../javax/swing/JTable.html#JTable%28javax.swing.table.TableModel, javax.swing.table.TableColumnModel, javax.swing.ListSelectionModel%29)(TableModel dm,TableColumnModel cm,ListSelectionModel sm) Constructs a JTable that is initialized withdm as the data model, cm as the column model, and sm as the selection model.
[JTable](../../javax/swing/JTable.html#JTable%28java.util.Vector, java.util.Vector%29)(Vector rowData,Vector columnNames) Constructs a JTable to display the values in theVector of Vectors, rowData, with column names, columnNames.
Method Summary
void addColumn(TableColumn aColumn) Appends aColumn to the end of the array of columns held by this JTable's column model.
void [addColumnSelectionInterval](../../javax/swing/JTable.html#addColumnSelectionInterval%28int, int%29)(int index0, int index1) Adds the columns from index0 to index1, inclusive, to the current selection.
void addNotify() Calls the configureEnclosingScrollPane method.
void [addRowSelectionInterval](../../javax/swing/JTable.html#addRowSelectionInterval%28int, int%29)(int index0, int index1) Adds the rows from index0 to index1, inclusive, to the current selection.
void [changeSelection](../../javax/swing/JTable.html#changeSelection%28int, int, boolean, boolean%29)(int rowIndex, int columnIndex, boolean toggle, boolean extend) Updates the selection models of the table, depending on the state of the two flags: toggle and extend.
void clearSelection() Deselects all selected columns and rows.
void columnAdded(TableColumnModelEvent e) Invoked when a column is added to the table column model.
int columnAtPoint(Point point) Returns the index of the column that point lies in, or -1 if the result is not in the range [0, getColumnCount()-1].
void columnMarginChanged(ChangeEvent e) Invoked when a column is moved due to a margin change.
void columnMoved(TableColumnModelEvent e) Invoked when a column is repositioned.
void columnRemoved(TableColumnModelEvent e) Invoked when a column is removed from the table column model.
void columnSelectionChanged(ListSelectionEvent e) Invoked when the selection model of the TableColumnModel is changed.
protected void configureEnclosingScrollPane() If this JTable is the viewportView of an enclosing JScrollPane (the usual situation), configure this ScrollPane by, amongst other things, installing the table's tableHeader as the columnHeaderView of the scroll pane.
int convertColumnIndexToModel(int viewColumnIndex) Maps the index of the column in the view atviewColumnIndex to the index of the column in the table model.
int convertColumnIndexToView(int modelColumnIndex) Maps the index of the column in the table model atmodelColumnIndex to the index of the column in the view.
protected TableColumnModel createDefaultColumnModel() Returns the default column model object, which is a DefaultTableColumnModel.
void createDefaultColumnsFromModel() Creates default columns for the table from the data model using the getColumnCount method defined in the TableModel interface.
protected TableModel createDefaultDataModel() Returns the default table model object, which is a DefaultTableModel.
protected void createDefaultEditors() Creates default cell editors for objects, numbers, and boolean values.
protected void createDefaultRenderers() Creates default cell renderers for objects, numbers, doubles, dates, booleans, and icons.
protected ListSelectionModel createDefaultSelectionModel() Returns the default selection model object, which is a DefaultListSelectionModel.
protected JTableHeader createDefaultTableHeader() Returns the default table header object, which is a JTableHeader.
static JScrollPane createScrollPaneForTable(JTable aTable) Deprecated. As of Swing version 1.0.2, replaced by new JScrollPane(aTable).
void doLayout() Causes this table to lay out its rows and columns.
boolean [editCellAt](../../javax/swing/JTable.html#editCellAt%28int, int%29)(int row, int column) Programmatically starts editing the cell at row andcolumn, if those indices are in the valid range, and the cell at those indices is editable.
boolean [editCellAt](../../javax/swing/JTable.html#editCellAt%28int, int, java.util.EventObject%29)(int row, int column,EventObject e) Programmatically starts editing the cell at row andcolumn, if those indices are in the valid range, and the cell at those indices is editable.
void editingCanceled(ChangeEvent e) Invoked when editing is canceled.
void editingStopped(ChangeEvent e) Invoked when editing is finished.
AccessibleContext getAccessibleContext() Gets the AccessibleContext associated with this JTable.
boolean getAutoCreateColumnsFromModel() Determines whether the table will create default columns from the model.
int getAutoResizeMode() Returns the auto resize mode of the table.
TableCellEditor getCellEditor() Returns the cell editor.
TableCellEditor [getCellEditor](../../javax/swing/JTable.html#getCellEditor%28int, int%29)(int row, int column) Returns an appropriate editor for the cell specified byrow and column.
Rectangle [getCellRect](../../javax/swing/JTable.html#getCellRect%28int, int, boolean%29)(int row, int column, boolean includeSpacing) Returns a rectangle for the cell that lies at the intersection ofrow and column.
TableCellRenderer [getCellRenderer](../../javax/swing/JTable.html#getCellRenderer%28int, int%29)(int row, int column) Returns an appropriate renderer for the cell specified by this row and column.
boolean getCellSelectionEnabled() Returns true if both row and column selection models are enabled.
TableColumn getColumn(Object identifier) Returns the TableColumn object for the column in the table whose identifier is equal to identifier, when compared usingequals.
Class<?> getColumnClass(int column) Returns the type of the column appearing in the view at column position column.
int getColumnCount() Returns the number of columns in the column model.
TableColumnModel getColumnModel() Returns the TableColumnModel that contains all column information of this table.
String getColumnName(int column) Returns the name of the column appearing in the view at column position column.
boolean getColumnSelectionAllowed() Returns true if columns can be selected.
TableCellEditor getDefaultEditor(Class<?> columnClass) Returns the editor to be used when no editor has been set in a TableColumn.
TableCellRenderer getDefaultRenderer(Class<?> columnClass) Returns the cell renderer to be used when no renderer has been set in a TableColumn.
boolean getDragEnabled() Gets the value of the dragEnabled property.
int getEditingColumn() Returns the index of the column that contains the cell currently being edited.
int getEditingRow() Returns the index of the row that contains the cell currently being edited.
Component getEditorComponent() Returns the component that is handling the editing session.
Color getGridColor() Returns the color used to draw grid lines.
Dimension getIntercellSpacing() Returns the horizontal and vertical space between cells.
TableModel getModel() Returns the TableModel that provides the data displayed by thisJTable.
Dimension getPreferredScrollableViewportSize() Returns the preferred size of the viewport for this table.
Printable [getPrintable](../../javax/swing/JTable.html#getPrintable%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat%29)(JTable.PrintMode printMode,MessageFormat headerFormat,MessageFormat footerFormat) Return a Printable for use in printing this JTable.
int getRowCount() Returns the number of rows in this table's model.
int getRowHeight() Returns the height of a table row, in pixels.
int getRowHeight(int row) Returns the height, in pixels, of the cells in row.
int getRowMargin() Gets the amount of empty space, in pixels, between cells.
boolean getRowSelectionAllowed() Returns true if rows can be selected.
int [getScrollableBlockIncrement](../../javax/swing/JTable.html#getScrollableBlockIncrement%28java.awt.Rectangle, int, int%29)(Rectangle visibleRect, int orientation, int direction) Returns visibleRect.height orvisibleRect.width, depending on this table's orientation.
boolean getScrollableTracksViewportHeight() Returns false to indicate that the height of the viewport does not determine the height of the table.
boolean getScrollableTracksViewportWidth() Returns false if autoResizeMode is set toAUTO_RESIZE_OFF, which indicates that the width of the viewport does not determine the width of the table.
int [getScrollableUnitIncrement](../../javax/swing/JTable.html#getScrollableUnitIncrement%28java.awt.Rectangle, int, int%29)(Rectangle visibleRect, int orientation, int direction) Returns the scroll increment (in pixels) that completely exposes one new row or column (depending on the orientation).
int getSelectedColumn() Returns the index of the first selected column, -1 if no column is selected.
int getSelectedColumnCount() Returns the number of selected columns.
int[] getSelectedColumns() Returns the indices of all selected columns.
int getSelectedRow() Returns the index of the first selected row, -1 if no row is selected.
int getSelectedRowCount() Returns the number of selected rows.
int[] getSelectedRows() Returns the indices of all selected rows.
Color getSelectionBackground() Returns the background color for selected cells.
Color getSelectionForeground() Returns the foreground color for selected cells.
ListSelectionModel getSelectionModel() Returns the ListSelectionModel that is used to maintain row selection state.
boolean getShowHorizontalLines() Returns true if the table draws horizontal lines between cells, false if it doesn't.
boolean getShowVerticalLines() Returns true if the table draws vertical lines between cells, false if it doesn't.
boolean getSurrendersFocusOnKeystroke() Returns true if the editor should get the focus when keystrokes cause the editor to be activated
JTableHeader getTableHeader() Returns the tableHeader used by this JTable.
String getToolTipText(MouseEvent event) Overrides JComponent's getToolTipText method in order to allow the renderer's tips to be used if it has text set.
TableUI getUI() Returns the L&F object that renders this component.
String getUIClassID() Returns the suffix used to construct the name of the L&F class used to render this component.
Object [getValueAt](../../javax/swing/JTable.html#getValueAt%28int, int%29)(int row, int column) Returns the cell value at row and column.
protected void initializeLocalVars() Initializes table properties to their default values.
boolean [isCellEditable](../../javax/swing/JTable.html#isCellEditable%28int, int%29)(int row, int column) Returns true if the cell at row and column is editable.
boolean [isCellSelected](../../javax/swing/JTable.html#isCellSelected%28int, int%29)(int row, int column) Returns true if the specified indices are in the valid range of rows and columns and the cell at the specified position is selected.
boolean isColumnSelected(int column) Returns true if the specified index is in the valid range of columns, and the column at that index is selected.
boolean isEditing() Returns true if a cell is being edited.
boolean isRowSelected(int row) Returns true if the specified index is in the valid range of rows, and the row at that index is selected.
void [moveColumn](../../javax/swing/JTable.html#moveColumn%28int, int%29)(int column, int targetColumn) Moves the column column to the position currently occupied by the column targetColumn in the view.
protected String paramString() Returns a string representation of this table.
Component [prepareEditor](../../javax/swing/JTable.html#prepareEditor%28javax.swing.table.TableCellEditor, int, int%29)(TableCellEditor editor, int row, int column) Prepares the editor by querying the data model for the value and selection state of the cell at row, column.
Component [prepareRenderer](../../javax/swing/JTable.html#prepareRenderer%28javax.swing.table.TableCellRenderer, int, int%29)(TableCellRenderer renderer, int row, int column) Prepares the renderer by querying the data model for the value and selection state of the cell at row, column.
boolean print() A convenience method that displays a printing dialog, and then prints this JTable in mode PrintMode.FIT_WIDTH, with no header or footer text.
boolean print(JTable.PrintMode printMode) A convenience method that displays a printing dialog, and then prints this JTable in the given printing mode, with no header or footer text.
boolean [print](../../javax/swing/JTable.html#print%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat%29)(JTable.PrintMode printMode,MessageFormat headerFormat,MessageFormat footerFormat) A convenience method that displays a printing dialog, and then prints this JTable in the given printing mode, with the specified header and footer text.
boolean [print](../../javax/swing/JTable.html#print%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat, boolean, javax.print.attribute.PrintRequestAttributeSet, boolean%29)(JTable.PrintMode printMode,MessageFormat headerFormat,MessageFormat footerFormat, boolean showPrintDialog,PrintRequestAttributeSet attr, boolean interactive) Print this JTable.
protected boolean [processKeyBinding](../../javax/swing/JTable.html#processKeyBinding%28javax.swing.KeyStroke, java.awt.event.KeyEvent, int, boolean%29)(KeyStroke ks,KeyEvent e, int condition, boolean pressed) Invoked to process the key bindings for ks as the result of the KeyEvent e.
void removeColumn(TableColumn aColumn) Removes aColumn from this JTable's array of columns.
void [removeColumnSelectionInterval](../../javax/swing/JTable.html#removeColumnSelectionInterval%28int, int%29)(int index0, int index1) Deselects the columns from index0 to index1, inclusive.
void removeEditor() Discards the editor object and frees the real estate it used for cell rendering.
void removeNotify() Calls the unconfigureEnclosingScrollPane method.
void [removeRowSelectionInterval](../../javax/swing/JTable.html#removeRowSelectionInterval%28int, int%29)(int index0, int index1) Deselects the rows from index0 to index1, inclusive.
protected void resizeAndRepaint() Equivalent to revalidate followed by repaint.
int rowAtPoint(Point point) Returns the index of the row that point lies in, or -1 if the result is not in the range [0, getRowCount()-1].
void selectAll() Selects all rows, columns, and cells in the table.
void setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel) Sets this table's autoCreateColumnsFromModel flag.
void setAutoResizeMode(int mode) Sets the table's auto resize mode when the table is resized.
void setCellEditor(TableCellEditor anEditor) Sets the cellEditor variable.
void setCellSelectionEnabled(boolean cellSelectionEnabled) Sets whether this table allows both a column selection and a row selection to exist simultaneously.
void setColumnModel(TableColumnModel columnModel) Sets the column model for this table to newModel and registers for listener notifications from the new column model.
void setColumnSelectionAllowed(boolean columnSelectionAllowed) Sets whether the columns in this model can be selected.
void [setColumnSelectionInterval](../../javax/swing/JTable.html#setColumnSelectionInterval%28int, int%29)(int index0, int index1) Selects the columns from index0 to index1, inclusive.
void [setDefaultEditor](../../javax/swing/JTable.html#setDefaultEditor%28java.lang.Class, javax.swing.table.TableCellEditor%29)(Class<?> columnClass,TableCellEditor editor) Sets a default cell editor to be used if no editor has been set in a TableColumn.
void [setDefaultRenderer](../../javax/swing/JTable.html#setDefaultRenderer%28java.lang.Class, javax.swing.table.TableCellRenderer%29)(Class<?> columnClass,TableCellRenderer renderer) Sets a default cell renderer to be used if no renderer has been set in a TableColumn.
void setDragEnabled(boolean b) Sets the dragEnabled property, which must be true to enable automatic drag handling (the first part of drag and drop) on this component.
void setEditingColumn(int aColumn) Sets the editingColumn variable.
void setEditingRow(int aRow) Sets the editingRow variable.
void setGridColor(Color gridColor) Sets the color used to draw grid lines to gridColor and redisplays.
void setIntercellSpacing(Dimension intercellSpacing) Sets the rowMargin and the columnMargin -- the height and width of the space between cells -- tointercellSpacing.
void setModel(TableModel dataModel) Sets the data model for this table to newModel and registers with it for listener notifications from the new data model.
void setPreferredScrollableViewportSize(Dimension size) Sets the preferred size of the viewport for this table.
void setRowHeight(int rowHeight) Sets the height, in pixels, of all cells to rowHeight, revalidates, and repaints.
void [setRowHeight](../../javax/swing/JTable.html#setRowHeight%28int, int%29)(int row, int rowHeight) Sets the height for row to rowHeight, revalidates, and repaints.
void setRowMargin(int rowMargin) Sets the amount of empty space between cells in adjacent rows.
void setRowSelectionAllowed(boolean rowSelectionAllowed) Sets whether the rows in this model can be selected.
void [setRowSelectionInterval](../../javax/swing/JTable.html#setRowSelectionInterval%28int, int%29)(int index0, int index1) Selects the rows from index0 to index1, inclusive.
void setSelectionBackground(Color selectionBackground) Sets the background color for selected cells.
void setSelectionForeground(Color selectionForeground) Sets the foreground color for selected cells.
void setSelectionMode(int selectionMode) Sets the table's selection mode to allow only single selections, a single contiguous interval, or multiple intervals.
void setSelectionModel(ListSelectionModel newModel) Sets the row selection model for this table to newModel and registers for listener notifications from the new selection model.
void setShowGrid(boolean showGrid) Sets whether the table draws grid lines around cells.
void setShowHorizontalLines(boolean showHorizontalLines) Sets whether the table draws horizontal lines between cells.
void setShowVerticalLines(boolean showVerticalLines) Sets whether the table draws vertical lines between cells.
void setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke) Sets whether editors in this JTable get the keyboard focus when an editor is activated as a result of the JTable forwarding keyboard events for a cell.
void setTableHeader(JTableHeader tableHeader) Sets the tableHeader working with this JTable to newHeader.
void setUI(TableUI ui) Sets the L&F object that renders this component and repaints.
void [setValueAt](../../javax/swing/JTable.html#setValueAt%28java.lang.Object, int, int%29)(Object aValue, int row, int column) Sets the value for the cell in the table model at row and column.
void sizeColumnsToFit(boolean lastColumnOnly) Deprecated. As of Swing version 1.0.3, replaced by doLayout().
void sizeColumnsToFit(int resizingColumn) Obsolete as of Java 2 platform v1.4.
void tableChanged(TableModelEvent e) Invoked when this table's TableModel generates a TableModelEvent.
protected void unconfigureEnclosingScrollPane() Reverses the effect of configureEnclosingScrollPane by replacing the columnHeaderView of the enclosing scroll pane with null.
void updateUI() Notification from the UIManager that the L&F has changed.
void valueChanged(ListSelectionEvent e) Invoked when the row selection changes -- repaints to show the new selection.
Methods inherited from class javax.swing.JComponent
addAncestorListener, addVetoableChangeListener, computeVisibleRect, [contains](../../javax/swing/JComponent.html#contains%28int, int%29), createToolTip, disable, enable, [firePropertyChange](../../javax/swing/JComponent.html#firePropertyChange%28java.lang.String, boolean, boolean%29), [firePropertyChange](../../javax/swing/JComponent.html#firePropertyChange%28java.lang.String, char, char%29), [firePropertyChange](../../javax/swing/JComponent.html#firePropertyChange%28java.lang.String, int, int%29), [fireVetoableChange](../../javax/swing/JComponent.html#fireVetoableChange%28java.lang.String, java.lang.Object, java.lang.Object%29), getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, [paintImmediately](../../javax/swing/JComponent.html#paintImmediately%28int, int, int, int%29), paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, [putClientProperty](../../javax/swing/JComponent.html#putClientProperty%28java.lang.Object, java.lang.Object%29), [registerKeyboardAction](../../javax/swing/JComponent.html#registerKeyboardAction%28java.awt.event.ActionListener, javax.swing.KeyStroke, int%29), [registerKeyboardAction](../../javax/swing/JComponent.html#registerKeyboardAction%28java.awt.event.ActionListener, java.lang.String, javax.swing.KeyStroke, int%29), removeAncestorListener, removeVetoableChangeListener, [repaint](../../javax/swing/JComponent.html#repaint%28long, int, int, int, int%29), repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, [reshape](../../javax/swing/JComponent.html#reshape%28int, int, int, int%29), revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, [setFocusTraversalKeys](../../javax/swing/JComponent.html#setFocusTraversalKeys%28int, java.util.Set%29), setFont, setForeground, setInheritsPopupMenu, [setInputMap](../../javax/swing/JComponent.html#setInputMap%28int, javax.swing.InputMap%29), setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update
Methods inherited from class java.awt.Container
add, [add](../../java/awt/Container.html#add%28java.awt.Component, int%29), [add](../../java/awt/Container.html#add%28java.awt.Component, java.lang.Object%29), [add](../../java/awt/Container.html#add%28java.awt.Component, java.lang.Object, int%29), [add](../../java/awt/Container.html#add%28java.lang.String, java.awt.Component%29), addContainerListener, [addImpl](../../java/awt/Container.html#addImpl%28java.awt.Component, java.lang.Object, int%29), addPropertyChangeListener, [addPropertyChangeListener](../../java/awt/Container.html#addPropertyChangeListener%28java.lang.String, java.beans.PropertyChangeListener%29), applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, [findComponentAt](../../java/awt/Container.html#findComponentAt%28int, int%29), findComponentAt, getComponent, [getComponentAt](../../java/awt/Container.html#getComponentAt%28int, int%29), getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, [list](../../java/awt/Container.html#list%28java.io.PrintStream, int%29), [list](../../java/awt/Container.html#list%28java.io.PrintWriter, int%29), [locate](../../java/awt/Container.html#locate%28int, int%29), minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, [setComponentZOrder](../../java/awt/Container.html#setComponentZOrder%28java.awt.Component, int%29), setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree
Methods inherited from class java.awt.Component
[action](../../java/awt/Component.html#action%28java.awt.Event, java.lang.Object%29), add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, [checkImage](../../java/awt/Component.html#checkImage%28java.awt.Image, java.awt.image.ImageObserver%29), [checkImage](../../java/awt/Component.html#checkImage%28java.awt.Image, int, int, java.awt.image.ImageObserver%29), [coalesceEvents](../../java/awt/Component.html#coalesceEvents%28java.awt.AWTEvent, java.awt.AWTEvent%29), contains, createImage, [createImage](../../java/awt/Component.html#createImage%28int, int%29), [createVolatileImage](../../java/awt/Component.html#createVolatileImage%28int, int%29), [createVolatileImage](../../java/awt/Component.html#createVolatileImage%28int, int, java.awt.ImageCapabilities%29), disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String, byte, byte%29), [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String, double, double%29), [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String, float, float%29), [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String, long, long%29), [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String, java.lang.Object, java.lang.Object%29), [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String, short, short%29), getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, [gotFocus](../../java/awt/Component.html#gotFocus%28java.awt.Event, java.lang.Object%29), handleEvent, hasFocus, hide, [imageUpdate](../../java/awt/Component.html#imageUpdate%28java.awt.Image, int, int, int, int, int%29), [inside](../../java/awt/Component.html#inside%28int, int%29), isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, [keyDown](../../java/awt/Component.html#keyDown%28java.awt.Event, int%29), [keyUp](../../java/awt/Component.html#keyUp%28java.awt.Event, int%29), list, list, list, location, [lostFocus](../../java/awt/Component.html#lostFocus%28java.awt.Event, java.lang.Object%29), [mouseDown](../../java/awt/Component.html#mouseDown%28java.awt.Event, int, int%29), [mouseDrag](../../java/awt/Component.html#mouseDrag%28java.awt.Event, int, int%29), [mouseEnter](../../java/awt/Component.html#mouseEnter%28java.awt.Event, int, int%29), [mouseExit](../../java/awt/Component.html#mouseExit%28java.awt.Event, int, int%29), [mouseMove](../../java/awt/Component.html#mouseMove%28java.awt.Event, int, int%29), [mouseUp](../../java/awt/Component.html#mouseUp%28java.awt.Event, int, int%29), [move](../../java/awt/Component.html#move%28int, int%29), nextFocus, paintAll, postEvent, [prepareImage](../../java/awt/Component.html#prepareImage%28java.awt.Image, java.awt.image.ImageObserver%29), [prepareImage](../../java/awt/Component.html#prepareImage%28java.awt.Image, int, int, java.awt.image.ImageObserver%29), processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, [removePropertyChangeListener](../../java/awt/Component.html#removePropertyChangeListener%28java.lang.String, java.beans.PropertyChangeListener%29), repaint, [repaint](../../java/awt/Component.html#repaint%28int, int, int, int%29), repaint, resize, [resize](../../java/awt/Component.html#resize%28int, int%29), [setBounds](../../java/awt/Component.html#setBounds%28int, int, int, int%29), setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, [setLocation](../../java/awt/Component.html#setLocation%28int, int%29), setLocation, setName, setSize, [setSize](../../java/awt/Component.html#setSize%28int, int%29), show, show, size, toString, transferFocus, transferFocusUpCycle
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, [wait](../../java/lang/Object.html#wait%28long, int%29)
Field Detail

AUTO_RESIZE_OFF

public static final int AUTO_RESIZE_OFF

Do not adjust column widths automatically; use a scrollbar.

See Also:

Constant Field Values

AUTO_RESIZE_NEXT_COLUMN

public static final int AUTO_RESIZE_NEXT_COLUMN

When a column is adjusted in the UI, adjust the next column the opposite way.

See Also:

Constant Field Values

AUTO_RESIZE_SUBSEQUENT_COLUMNS

public static final int AUTO_RESIZE_SUBSEQUENT_COLUMNS

During UI adjustment, change subsequent columns to preserve the total width; this is the default behavior.

See Also:

Constant Field Values

AUTO_RESIZE_LAST_COLUMN

public static final int AUTO_RESIZE_LAST_COLUMN

During all resize operations, apply adjustments to the last column only.

See Also:

Constant Field Values

AUTO_RESIZE_ALL_COLUMNS

public static final int AUTO_RESIZE_ALL_COLUMNS

During all resize operations, proportionately resize all columns.

See Also:

Constant Field Values

dataModel

protected TableModel dataModel

The TableModel of the table.

columnModel

protected TableColumnModel columnModel

The TableColumnModel of the table.

selectionModel

protected ListSelectionModel selectionModel

The ListSelectionModel of the table, used to keep track of row selections.

tableHeader

protected JTableHeader tableHeader

The TableHeader working with the table.

rowHeight

protected int rowHeight

The height in pixels of each row in the table.

rowMargin

protected int rowMargin

The height in pixels of the margin between the cells in each row.

gridColor

protected Color gridColor

The color of the grid.

showHorizontalLines

protected boolean showHorizontalLines

The table draws horizontal lines between cells if showHorizontalLines is true.

showVerticalLines

protected boolean showVerticalLines

The table draws vertical lines between cells if showVerticalLines is true.

autoResizeMode

protected int autoResizeMode

Determines if the table automatically resizes the width of the table's columns to take up the entire width of the table, and how it does the resizing.

autoCreateColumnsFromModel

protected boolean autoCreateColumnsFromModel

The table will query the TableModel to build the default set of columns if this is true.

preferredViewportSize

protected Dimension preferredViewportSize

Used by the Scrollable interface to determine the initial visible area.

rowSelectionAllowed

protected boolean rowSelectionAllowed

True if row selection is allowed in this table.

cellSelectionEnabled

protected boolean cellSelectionEnabled

Obsolete as of Java 2 platform v1.3. Please use therowSelectionAllowed property and thecolumnSelectionAllowed property of thecolumnModel instead. Or use the method getCellSelectionEnabled.

editorComp

protected transient Component editorComp

If editing, the Component that is handling the editing.

cellEditor

protected transient TableCellEditor cellEditor

The object that overwrites the screen real estate occupied by the current cell and allows the user to change its contents.

editingColumn

protected transient int editingColumn

Identifies the column of the cell being edited.

editingRow

protected transient int editingRow

Identifies the row of the cell being edited.

defaultRenderersByColumnClass

protected transient Hashtable defaultRenderersByColumnClass

A table of objects that display the contents of a cell, indexed by class as declared in getColumnClass in the TableModel interface.

defaultEditorsByColumnClass

protected transient Hashtable defaultEditorsByColumnClass

A table of objects that display and edit the contents of a cell, indexed by class as declared in getColumnClass in the TableModel interface.

selectionForeground

protected Color selectionForeground

The foreground color of selected cells.

selectionBackground

protected Color selectionBackground

The background color of selected cells.

Constructor Detail

JTable

public JTable()

Constructs a default JTable that is initialized with a default data model, a default column model, and a default selection model.

See Also:

createDefaultDataModel(), createDefaultColumnModel(), createDefaultSelectionModel()

JTable

public JTable(TableModel dm)

Constructs a JTable that is initialized withdm as the data model, a default column model, and a default selection model.

Parameters:

dm - the data model for the table

See Also:

createDefaultColumnModel(), createDefaultSelectionModel()

JTable

public JTable(TableModel dm, TableColumnModel cm)

Constructs a JTable that is initialized withdm as the data model, cm as the column model, and a default selection model.

Parameters:

dm - the data model for the table

cm - the column model for the table

See Also:

createDefaultSelectionModel()

JTable

public JTable(TableModel dm, TableColumnModel cm, ListSelectionModel sm)

Constructs a JTable that is initialized withdm as the data model, cm as the column model, and sm as the selection model. If any of the parameters are null this method will initialize the table with the corresponding default model. The autoCreateColumnsFromModel flag is set to false if cm is non-null, otherwise it is set to true and the column model is populated with suitableTableColumns for the columns in dm.

Parameters:

dm - the data model for the table

cm - the column model for the table

sm - the row selection model for the table

See Also:

createDefaultDataModel(), createDefaultColumnModel(), createDefaultSelectionModel()

JTable

public JTable(int numRows, int numColumns)

Constructs a JTable with numRows and numColumns of empty cells usingDefaultTableModel. The columns will have names of the form "A", "B", "C", etc.

Parameters:

numRows - the number of rows the table holds

numColumns - the number of columns the table holds

See Also:

DefaultTableModel

JTable

public JTable(Vector rowData, Vector columnNames)

Constructs a JTable to display the values in theVector of Vectors, rowData, with column names, columnNames. TheVectors contained in rowData should contain the values for that row. In other words, the value of the cell at row 1, column 5 can be obtained with the following code:

((Vector)rowData.elementAt(1)).elementAt(5);

Parameters:

rowData - the data for the new table

columnNames - names of each column

JTable

public JTable(Object[][] rowData, Object[] columnNames)

Constructs a JTable to display the values in the two dimensional array,rowData, with column names, columnNames.rowData is an array of rows, so the value of the cell at row 1, column 5 can be obtained with the following code:

rowData[1][5];

All rows must be of the same length as columnNames.

Parameters:

rowData - the data for the new table

columnNames - names of each column

Method Detail

addNotify

public void addNotify()

Calls the configureEnclosingScrollPane method.

Overrides:

[addNotify](../../javax/swing/JComponent.html#addNotify%28%29) in class [JComponent](../../javax/swing/JComponent.html "class in javax.swing")

See Also:

configureEnclosingScrollPane()

configureEnclosingScrollPane

protected void configureEnclosingScrollPane()

If this JTable is the viewportView of an enclosing JScrollPane (the usual situation), configure this ScrollPane by, amongst other things, installing the table's tableHeader as the columnHeaderView of the scroll pane. When a JTable is added to a JScrollPane in the usual way, using new JScrollPane(myTable), addNotify is called in the JTable (when the table is added to the viewport).JTable's addNotify method in turn calls this method, which is protected so that this default installation procedure can be overridden by a subclass.

See Also:

addNotify()

removeNotify

public void removeNotify()

Calls the unconfigureEnclosingScrollPane method.

Overrides:

[removeNotify](../../javax/swing/JComponent.html#removeNotify%28%29) in class [JComponent](../../javax/swing/JComponent.html "class in javax.swing")

See Also:

unconfigureEnclosingScrollPane()

unconfigureEnclosingScrollPane

protected void unconfigureEnclosingScrollPane()

Reverses the effect of configureEnclosingScrollPane by replacing the columnHeaderView of the enclosing scroll pane with null. JTable'sremoveNotify method calls this method, which is protected so that this default uninstallation procedure can be overridden by a subclass.

See Also:

removeNotify(), configureEnclosingScrollPane()

createScrollPaneForTable

@Deprecated public static JScrollPane createScrollPaneForTable(JTable aTable)

Deprecated. As of Swing version 1.0.2, replaced by new JScrollPane(aTable).

Equivalent to new JScrollPane(aTable).

setTableHeader

public void setTableHeader(JTableHeader tableHeader)

Sets the tableHeader working with this JTable to newHeader. It is legal to have a null tableHeader.

Parameters:

tableHeader - new tableHeader

See Also:

getTableHeader()

getTableHeader

public JTableHeader getTableHeader()

Returns the tableHeader used by this JTable.

Returns:

the tableHeader used by this table

See Also:

setTableHeader(javax.swing.table.JTableHeader)

setRowHeight

public void setRowHeight(int rowHeight)

Sets the height, in pixels, of all cells to rowHeight, revalidates, and repaints. The height of the cells will be equal to the row height minus the row margin.

Parameters:

rowHeight - new row height

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if rowHeight is less than 1

See Also:

getRowHeight()

getRowHeight

public int getRowHeight()

Returns the height of a table row, in pixels. The default row height is 16.0.

Returns:

the height in pixels of a table row

See Also:

setRowHeight(int)

setRowHeight

public void setRowHeight(int row, int rowHeight)

Sets the height for row to rowHeight, revalidates, and repaints. The height of the cells in this row will be equal to the row height minus the row margin.

Parameters:

row - the row whose height is being changed

rowHeight - new row height, in pixels

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if rowHeight is less than 1

getRowHeight

public int getRowHeight(int row)

Returns the height, in pixels, of the cells in row.

Parameters:

row - the row whose height is to be returned

Returns:

the height, in pixels, of the cells in the row

setRowMargin

public void setRowMargin(int rowMargin)

Sets the amount of empty space between cells in adjacent rows.

Parameters:

rowMargin - the number of pixels between cells in a row

See Also:

getRowMargin()

getRowMargin

public int getRowMargin()

Gets the amount of empty space, in pixels, between cells. Equivalent to:getIntercellSpacing().height.

Returns:

the number of pixels between cells in a row

See Also:

setRowMargin(int)

setIntercellSpacing

public void setIntercellSpacing(Dimension intercellSpacing)

Sets the rowMargin and the columnMargin -- the height and width of the space between cells -- tointercellSpacing.

Parameters:

intercellSpacing - a Dimension specifying the new width and height between cells

See Also:

getIntercellSpacing()

getIntercellSpacing

public Dimension getIntercellSpacing()

Returns the horizontal and vertical space between cells. The default spacing is (1, 1), which provides room to draw the grid.

Returns:

the horizontal and vertical spacing between cells

See Also:

setIntercellSpacing(java.awt.Dimension)

setGridColor

public void setGridColor(Color gridColor)

Sets the color used to draw grid lines to gridColor and redisplays. The default color is look and feel dependent.

Parameters:

gridColor - the new color of the grid lines

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if gridColor is null

See Also:

getGridColor()

getGridColor

public Color getGridColor()

Returns the color used to draw grid lines. The default color is look and feel dependent.

Returns:

the color used to draw grid lines

See Also:

setGridColor(java.awt.Color)

setShowGrid

public void setShowGrid(boolean showGrid)

Sets whether the table draws grid lines around cells. If showGrid is true it does; if it is false it doesn't. There is no getShowGrid method as this state is held in two variables -- showHorizontalLines and showVerticalLines -- each of which can be queried independently.

Parameters:

showGrid - true if table view should draw grid lines

See Also:

setShowVerticalLines(boolean), setShowHorizontalLines(boolean)

setShowHorizontalLines

public void setShowHorizontalLines(boolean showHorizontalLines)

Sets whether the table draws horizontal lines between cells. If showHorizontalLines is true it does; if it is false it doesn't.

Parameters:

showHorizontalLines - true if table view should draw horizontal lines

See Also:

getShowHorizontalLines(), setShowGrid(boolean), setShowVerticalLines(boolean)

setShowVerticalLines

public void setShowVerticalLines(boolean showVerticalLines)

Sets whether the table draws vertical lines between cells. If showVerticalLines is true it does; if it is false it doesn't.

Parameters:

showVerticalLines - true if table view should draw vertical lines

See Also:

getShowVerticalLines(), setShowGrid(boolean), setShowHorizontalLines(boolean)

getShowHorizontalLines

public boolean getShowHorizontalLines()

Returns true if the table draws horizontal lines between cells, false if it doesn't. The default is true.

Returns:

true if the table draws horizontal lines between cells, false if it doesn't

See Also:

setShowHorizontalLines(boolean)

getShowVerticalLines

public boolean getShowVerticalLines()

Returns true if the table draws vertical lines between cells, false if it doesn't. The default is true.

Returns:

true if the table draws vertical lines between cells, false if it doesn't

See Also:

setShowVerticalLines(boolean)

setAutoResizeMode

public void setAutoResizeMode(int mode)

Sets the table's auto resize mode when the table is resized.

Parameters:

mode - One of 5 legal values: AUTO_RESIZE_OFF, AUTO_RESIZE_NEXT_COLUMN, AUTO_RESIZE_SUBSEQUENT_COLUMNS, AUTO_RESIZE_LAST_COLUMN, AUTO_RESIZE_ALL_COLUMNS

See Also:

getAutoResizeMode(), doLayout()

getAutoResizeMode

public int getAutoResizeMode()

Returns the auto resize mode of the table. The default mode is AUTO_RESIZE_SUBSEQUENT_COLUMNS.

Returns:

the autoResizeMode of the table

See Also:

setAutoResizeMode(int), doLayout()

setAutoCreateColumnsFromModel

public void setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel)

Sets this table's autoCreateColumnsFromModel flag. This method calls createDefaultColumnsFromModel ifautoCreateColumnsFromModel changes from false to true.

Parameters:

autoCreateColumnsFromModel - true if JTable should automatically create columns

See Also:

getAutoCreateColumnsFromModel(), createDefaultColumnsFromModel()

getAutoCreateColumnsFromModel

public boolean getAutoCreateColumnsFromModel()

Determines whether the table will create default columns from the model. If true, setModel will clear any existing columns and create new columns from the new model. Also, if the event in the tableChanged notification specifies that the entire table changed, then the columns will be rebuilt. The default is true.

Returns:

the autoCreateColumnsFromModel of the table

See Also:

setAutoCreateColumnsFromModel(boolean), createDefaultColumnsFromModel()

createDefaultColumnsFromModel

public void createDefaultColumnsFromModel()

Creates default columns for the table from the data model using the getColumnCount method defined in the TableModel interface.

Clears any existing columns before creating the new columns based on information from the model.

See Also:

getAutoCreateColumnsFromModel()

setDefaultRenderer

public void setDefaultRenderer(Class<?> columnClass, TableCellRenderer renderer)

Sets a default cell renderer to be used if no renderer has been set in a TableColumn. If renderer is null, removes the default renderer for this column class.

Parameters:

columnClass - set the default cell renderer for this columnClass

renderer - default cell renderer to be used for this columnClass

See Also:

getDefaultRenderer(java.lang.Class), [setDefaultEditor(java.lang.Class, javax.swing.table.TableCellEditor)](../../javax/swing/JTable.html#setDefaultEditor%28java.lang.Class, javax.swing.table.TableCellEditor%29)

getDefaultRenderer

public TableCellRenderer getDefaultRenderer(Class<?> columnClass)

Returns the cell renderer to be used when no renderer has been set in a TableColumn. During the rendering of cells the renderer is fetched from a Hashtable of entries according to the class of the cells in the column. If there is no entry for this columnClass the method returns the entry for the most specific superclass. The JTable installs entries for Object, Number, and Boolean, all of which can be modified or replaced.

Parameters:

columnClass - return the default cell renderer for this columnClass

Returns:

the renderer for this columnClass

See Also:

[setDefaultRenderer(java.lang.Class, javax.swing.table.TableCellRenderer)](../../javax/swing/JTable.html#setDefaultRenderer%28java.lang.Class, javax.swing.table.TableCellRenderer%29), getColumnClass(int)

setDefaultEditor

public void setDefaultEditor(Class<?> columnClass, TableCellEditor editor)

Sets a default cell editor to be used if no editor has been set in a TableColumn. If no editing is required in a table, or a particular column in a table, uses the isCellEditable method in the TableModel interface to ensure that thisJTable will not start an editor in these columns. If editor is null, removes the default editor for this column class.

Parameters:

columnClass - set the default cell editor for this columnClass

editor - default cell editor to be used for this columnClass

See Also:

[TableModel.isCellEditable(int, int)](../../javax/swing/table/TableModel.html#isCellEditable%28int, int%29), getDefaultEditor(java.lang.Class), [setDefaultRenderer(java.lang.Class, javax.swing.table.TableCellRenderer)](../../javax/swing/JTable.html#setDefaultRenderer%28java.lang.Class, javax.swing.table.TableCellRenderer%29)

getDefaultEditor

public TableCellEditor getDefaultEditor(Class<?> columnClass)

Returns the editor to be used when no editor has been set in a TableColumn. During the editing of cells the editor is fetched from a Hashtable of entries according to the class of the cells in the column. If there is no entry for this columnClass the method returns the entry for the most specific superclass. The JTable installs entries for Object, Number, and Boolean, all of which can be modified or replaced.

Parameters:

columnClass - return the default cell editor for this columnClass

Returns:

the default cell editor to be used for this columnClass

See Also:

[setDefaultEditor(java.lang.Class, javax.swing.table.TableCellEditor)](../../javax/swing/JTable.html#setDefaultEditor%28java.lang.Class, javax.swing.table.TableCellEditor%29), getColumnClass(int)

setDragEnabled

public void setDragEnabled(boolean b)

Sets the dragEnabled property, which must be true to enable automatic drag handling (the first part of drag and drop) on this component. The transferHandler property needs to be set to a non-null value for the drag to do anything. The default value of the dragEnabledfalse.

When automatic drag handling is enabled, most look and feels begin a drag-and-drop operation whenever the user presses the mouse button over a selection and then moves the mouse a few pixels. Setting this property to true can therefore have a subtle effect on how selections behave.

Some look and feels might not support automatic drag and drop; they will ignore this property. You can work around such look and feels by modifying the component to directly call the exportAsDrag method of aTransferHandler.

Parameters:

b - the value to set the dragEnabled property to

Throws:

[HeadlessException](../../java/awt/HeadlessException.html "class in java.awt") - ifb is true andGraphicsEnvironment.isHeadless() returns true

Since:

1.4

See Also:

GraphicsEnvironment.isHeadless(), getDragEnabled(), JComponent.setTransferHandler(javax.swing.TransferHandler), TransferHandler

getDragEnabled

public boolean getDragEnabled()

Gets the value of the dragEnabled property.

Returns:

the value of the dragEnabled property

Since:

1.4

See Also:

setDragEnabled(boolean)

setSelectionMode

public void setSelectionMode(int selectionMode)

Sets the table's selection mode to allow only single selections, a single contiguous interval, or multiple intervals.

Note: JTable provides all the methods for handling column and row selection. When setting states, such as setSelectionMode, it not only updates the mode for the row selection model but also sets similar values in the selection model of the columnModel. If you want to have the row and column selection models operating in different modes, set them both directly.

Both the row and column selection models for JTable default to using a DefaultListSelectionModel so that JTable works the same way as theJList. See the setSelectionMode method in JList for details about the modes.

See Also:

JList.setSelectionMode(int)

setRowSelectionAllowed

public void setRowSelectionAllowed(boolean rowSelectionAllowed)

Sets whether the rows in this model can be selected.

Parameters:

rowSelectionAllowed - true if this model will allow row selection

See Also:

getRowSelectionAllowed()

getRowSelectionAllowed

public boolean getRowSelectionAllowed()

Returns true if rows can be selected.

Returns:

true if rows can be selected, otherwise false

See Also:

setRowSelectionAllowed(boolean)

setColumnSelectionAllowed

public void setColumnSelectionAllowed(boolean columnSelectionAllowed)

Sets whether the columns in this model can be selected.

Parameters:

columnSelectionAllowed - true if this model will allow column selection

See Also:

getColumnSelectionAllowed()

getColumnSelectionAllowed

public boolean getColumnSelectionAllowed()

Returns true if columns can be selected.

Returns:

true if columns can be selected, otherwise false

See Also:

setColumnSelectionAllowed(boolean)

setCellSelectionEnabled

public void setCellSelectionEnabled(boolean cellSelectionEnabled)

Sets whether this table allows both a column selection and a row selection to exist simultaneously. When set, the table treats the intersection of the row and column selection models as the selected cells. Override isCellSelected to change this default behavior. This method is equivalent to setting both the rowSelectionAllowed property andcolumnSelectionAllowed property of thecolumnModel to the supplied value.

Parameters:

cellSelectionEnabled - true if simultaneous row and column selection is allowed

See Also:

getCellSelectionEnabled(), [isCellSelected(int, int)](../../javax/swing/JTable.html#isCellSelected%28int, int%29)

getCellSelectionEnabled

public boolean getCellSelectionEnabled()

Returns true if both row and column selection models are enabled. Equivalent to getRowSelectionAllowed() && getColumnSelectionAllowed().

Returns:

true if both row and column selection models are enabled

See Also:

setCellSelectionEnabled(boolean)

selectAll

public void selectAll()

Selects all rows, columns, and cells in the table.

clearSelection

public void clearSelection()

Deselects all selected columns and rows.

setRowSelectionInterval

public void setRowSelectionInterval(int index0, int index1)

Selects the rows from index0 to index1, inclusive.

Parameters:

index0 - one end of the interval

index1 - the other end of the interval

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if index0 orindex1 lie outside [0, getRowCount()-1]

setColumnSelectionInterval

public void setColumnSelectionInterval(int index0, int index1)

Selects the columns from index0 to index1, inclusive.

Parameters:

index0 - one end of the interval

index1 - the other end of the interval

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if index0 orindex1 lie outside [0, getColumnCount()-1]

addRowSelectionInterval

public void addRowSelectionInterval(int index0, int index1)

Adds the rows from index0 to index1, inclusive, to the current selection.

Parameters:

index0 - one end of the interval

index1 - the other end of the interval

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if index0 or index1 lie outside [0, getRowCount()-1]

addColumnSelectionInterval

public void addColumnSelectionInterval(int index0, int index1)

Adds the columns from index0 to index1, inclusive, to the current selection.

Parameters:

index0 - one end of the interval

index1 - the other end of the interval

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if index0 orindex1 lie outside [0, getColumnCount()-1]

removeRowSelectionInterval

public void removeRowSelectionInterval(int index0, int index1)

Deselects the rows from index0 to index1, inclusive.

Parameters:

index0 - one end of the interval

index1 - the other end of the interval

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if index0 orindex1 lie outside [0, getRowCount()-1]

removeColumnSelectionInterval

public void removeColumnSelectionInterval(int index0, int index1)

Deselects the columns from index0 to index1, inclusive.

Parameters:

index0 - one end of the interval

index1 - the other end of the interval

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if index0 orindex1 lie outside [0, getColumnCount()-1]

getSelectedRow

public int getSelectedRow()

Returns the index of the first selected row, -1 if no row is selected.

Returns:

the index of the first selected row

getSelectedColumn

public int getSelectedColumn()

Returns the index of the first selected column, -1 if no column is selected.

Returns:

the index of the first selected column

getSelectedRows

public int[] getSelectedRows()

Returns the indices of all selected rows.

Returns:

an array of integers containing the indices of all selected rows, or an empty array if no row is selected

See Also:

getSelectedRow()

getSelectedColumns

public int[] getSelectedColumns()

Returns the indices of all selected columns.

Returns:

an array of integers containing the indices of all selected columns, or an empty array if no column is selected

See Also:

getSelectedColumn()

getSelectedRowCount

public int getSelectedRowCount()

Returns the number of selected rows.

Returns:

the number of selected rows, 0 if no rows are selected

getSelectedColumnCount

public int getSelectedColumnCount()

Returns the number of selected columns.

Returns:

the number of selected columns, 0 if no columns are selected

isRowSelected

public boolean isRowSelected(int row)

Returns true if the specified index is in the valid range of rows, and the row at that index is selected.

Returns:

true if row is a valid index and the row at that index is selected (where 0 is the first row)

isColumnSelected

public boolean isColumnSelected(int column)

Returns true if the specified index is in the valid range of columns, and the column at that index is selected.

Parameters:

column - the column in the column model

Returns:

true if column is a valid index and the column at that index is selected (where 0 is the first column)

isCellSelected

public boolean isCellSelected(int row, int column)

Returns true if the specified indices are in the valid range of rows and columns and the cell at the specified position is selected.

Parameters:

row - the row being queried

column - the column being queried

Returns:

true if row and column are valid indices and the cell at index (row, column) is selected, where the first row and first column are at index 0

changeSelection

public void changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend)

Updates the selection models of the table, depending on the state of the two flags: toggle and extend. Most changes to the selection that are the result of keyboard or mouse events received by the UI are channeled through this method so that the behavior may be overridden by a subclass. Some UIs may need more functionality than this method provides, such as when manipulating the lead for discontiguous selection, and may not call into this method for some selection changes.

This implementation uses the following conventions:

Parameters:

rowIndex - affects the selection at row

columnIndex - affects the selection at column

toggle - see description above

extend - if true, extend the current selection

getSelectionForeground

public Color getSelectionForeground()

Returns the foreground color for selected cells.

Returns:

the Color object for the foreground property

See Also:

setSelectionForeground(java.awt.Color), setSelectionBackground(java.awt.Color)

setSelectionForeground

public void setSelectionForeground(Color selectionForeground)

Sets the foreground color for selected cells. Cell renderers can use this color to render text and graphics for selected cells.

The default value of this property is defined by the look and feel implementation.

This is a JavaBeans bound property.

Parameters:

selectionForeground - the Color to use in the foreground for selected list items

See Also:

getSelectionForeground(), setSelectionBackground(java.awt.Color), JComponent.setForeground(java.awt.Color), JComponent.setBackground(java.awt.Color), JComponent.setFont(java.awt.Font)

getSelectionBackground

public Color getSelectionBackground()

Returns the background color for selected cells.

Returns:

the Color used for the background of selected list items

See Also:

setSelectionBackground(java.awt.Color), setSelectionForeground(java.awt.Color)

setSelectionBackground

public void setSelectionBackground(Color selectionBackground)

Sets the background color for selected cells. Cell renderers can use this color to the fill selected cells.

The default value of this property is defined by the look and feel implementation.

This is a JavaBeans bound property.

Parameters:

selectionBackground - the Color to use for the background of selected cells

See Also:

getSelectionBackground(), setSelectionForeground(java.awt.Color), JComponent.setForeground(java.awt.Color), JComponent.setBackground(java.awt.Color), JComponent.setFont(java.awt.Font)

getColumn

public TableColumn getColumn(Object identifier)

Returns the TableColumn object for the column in the table whose identifier is equal to identifier, when compared usingequals.

Parameters:

identifier - the identifier object

Returns:

the TableColumn object that matches the identifier

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if identifier is null or no TableColumn has this identifier

convertColumnIndexToModel

public int convertColumnIndexToModel(int viewColumnIndex)

Maps the index of the column in the view atviewColumnIndex to the index of the column in the table model. Returns the index of the corresponding column in the model. If viewColumnIndex is less than zero, returns viewColumnIndex.

Parameters:

viewColumnIndex - the index of the column in the view

Returns:

the index of the corresponding column in the model

See Also:

convertColumnIndexToView(int)

convertColumnIndexToView

public int convertColumnIndexToView(int modelColumnIndex)

Maps the index of the column in the table model atmodelColumnIndex to the index of the column in the view. Returns the index of the corresponding column in the view; returns -1 if this column is not being displayed. If modelColumnIndex is less than zero, returns modelColumnIndex.

Parameters:

modelColumnIndex - the index of the column in the model

Returns:

the index of the corresponding column in the view

See Also:

convertColumnIndexToModel(int)

getRowCount

public int getRowCount()

Returns the number of rows in this table's model.

Returns:

the number of rows in this table's model

See Also:

getColumnCount()

getColumnCount

public int getColumnCount()

Returns the number of columns in the column model. Note that this may be different from the number of columns in the table model.

Returns:

the number of columns in the table

See Also:

getRowCount(), removeColumn(javax.swing.table.TableColumn)

getColumnName

public String getColumnName(int column)

Returns the name of the column appearing in the view at column position column.

Parameters:

column - the column in the view being queried

Returns:

the name of the column at position column in the view where the first column is column 0

getColumnClass

public Class<?> getColumnClass(int column)

Returns the type of the column appearing in the view at column position column.

Parameters:

column - the column in the view being queried

Returns:

the type of the column at position column in the view where the first column is column 0

getValueAt

public Object getValueAt(int row, int column)

Returns the cell value at row and column.

Note: The column is specified in the table view's display order, and not in the TableModel's column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering.

Parameters:

row - the row whose value is to be queried

column - the column whose value is to be queried

Returns:

the Object at the specified cell

setValueAt

public void setValueAt(Object aValue, int row, int column)

Sets the value for the cell in the table model at row and column.

Note: The column is specified in the table view's display order, and not in the TableModel's column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering.aValue is the new value.

Parameters:

aValue - the new value

row - the row of the cell to be changed

column - the column of the cell to be changed

See Also:

[getValueAt(int, int)](../../javax/swing/JTable.html#getValueAt%28int, int%29)

isCellEditable

public boolean isCellEditable(int row, int column)

Returns true if the cell at row and column is editable. Otherwise, invoking setValueAt on the cell will have no effect.

Note: The column is specified in the table view's display order, and not in the TableModel's column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering.

Parameters:

row - the row whose value is to be queried

column - the column whose value is to be queried

Returns:

true if the cell is editable

See Also:

[setValueAt(java.lang.Object, int, int)](../../javax/swing/JTable.html#setValueAt%28java.lang.Object, int, int%29)

addColumn

public void addColumn(TableColumn aColumn)

Appends aColumn to the end of the array of columns held by this JTable's column model. If the column name of aColumn is null, sets the column name of aColumn to the name returned by getModel().getColumnName().

To add a column to this JTable to display themodelColumn'th column of data in the model with a given width, cellRenderer, and cellEditor you can use:

  addColumn(new TableColumn(modelColumn, width, cellRenderer, cellEditor));

[Any of the TableColumn constructors can be used instead of this one.] The model column number is stored inside the TableColumn and is used during rendering and editing to locate the appropriates data values in the model. The model column number does not change when columns are reordered in the view.

Parameters:

aColumn - the TableColumn to be added

See Also:

removeColumn(javax.swing.table.TableColumn)

removeColumn

public void removeColumn(TableColumn aColumn)

Removes aColumn from this JTable's array of columns. Note: this method does not remove the column of data from the model; it just removes the TableColumn that was responsible for displaying it.

Parameters:

aColumn - the TableColumn to be removed

See Also:

addColumn(javax.swing.table.TableColumn)

moveColumn

public void moveColumn(int column, int targetColumn)

Moves the column column to the position currently occupied by the column targetColumn in the view. The old column at targetColumn is shifted left or right to make room.

Parameters:

column - the index of column to be moved

targetColumn - the new index of the column

columnAtPoint

public int columnAtPoint(Point point)

Returns the index of the column that point lies in, or -1 if the result is not in the range [0, getColumnCount()-1].

Parameters:

point - the location of interest

Returns:

the index of the column that point lies in, or -1 if the result is not in the range [0, getColumnCount()-1]

See Also:

rowAtPoint(java.awt.Point)

rowAtPoint

public int rowAtPoint(Point point)

Returns the index of the row that point lies in, or -1 if the result is not in the range [0, getRowCount()-1].

Parameters:

point - the location of interest

Returns:

the index of the row that point lies in, or -1 if the result is not in the range [0, getRowCount()-1]

See Also:

columnAtPoint(java.awt.Point)

getCellRect

public Rectangle getCellRect(int row, int column, boolean includeSpacing)

Returns a rectangle for the cell that lies at the intersection ofrow and column. If includeSpacing is true then the value returned has the full height and width of the row and column specified. If it is false, the returned rectangle is inset by the intercell spacing to return the true bounds of the rendering or editing component as it will be set during rendering.

If the column index is valid but the row index is less than zero the method returns a rectangle with they and height values set appropriately and the x and width values both set to zero. In general, when either the row or column indices indicate a cell outside the appropriate range, the method returns a rectangle depicting the closest edge of the closest cell that is within the table's range. When both row and column indices are out of range the returned rectangle covers the closest point of the closest cell.

In all cases, calculations that use this method to calculate results along one axis will not fail because of anomalies in calculations along the other axis. When the cell is not valid the includeSpacing parameter is ignored.

Parameters:

row - the row index where the desired cell is located

column - the column index where the desired cell is located in the display; this is not necessarily the same as the column index in the data model for the table; theconvertColumnIndexToView(int) method may be used to convert a data model column index to a display column index

includeSpacing - if false, return the true cell bounds - computed by subtracting the intercell spacing from the height and widths of the column and row models

Returns:

the rectangle containing the cell at locationrow,column

doLayout

public void doLayout()

Causes this table to lay out its rows and columns. Overridden so that columns can be resized to accomodate a change in the size of a containing parent. Resizes one or more of the columns in the table so that the total width of all of this JTable's columns is equal to the width of the table.

Before the layout begins the method gets theresizingColumn of the tableHeader. When the method is called as a result of the resizing of an enclosing window, the resizingColumn is null. This means that resizing has taken place "outside" the JTable and the change - or "delta" - should be distributed to all of the columns regardless of this JTable's automatic resize mode.

If the resizingColumn is not null, it is one of the columns in the table that has changed size rather than the table itself. In this case the auto-resize modes govern the way the extra (or deficit) space is distributed amongst the available columns.

The modes are:

Note: When a JTable makes adjustments to the widths of the columns it respects their minimum and maximum values absolutely. It is therefore possible that, even after this method is called, the total width of the columns is still not equal to the width of the table. When this happens the JTable does not put itself in AUTO_RESIZE_OFF mode to bring up a scroll bar, or break other commitments of its current auto-resize mode -- instead it allows its bounds to be set larger (or smaller) than the total of the column minimum or maximum, meaning, either that there will not be enough room to display all of the columns, or that the columns will not fill the JTable's bounds. These respectively, result in the clipping of some columns or an area being painted in the JTable's background color during painting.

The mechanism for distributing the delta amongst the available columns is provided in a private method in the JTable class:

adjustSizes(long targetSize, final Resizable3 r, boolean inverse)

an explanation of which is provided in the following section.Resizable3 is a private interface that allows any data structure containing a collection of elements with a size, preferred size, maximum size and minimum size to have its elements manipulated by the algorithm.

Distributing the delta

Overview

Call "DELTA" the difference between the target size and the sum of the preferred sizes of the elements in r. The individual sizes are calculated by taking the original preferred sizes and adding a share of the DELTA - that share being based on how far each preferred size is from its limiting bound (minimum or maximum).

Definition

Call the individual constraints min[i], max[i], and pref[i].

Call their respective sums: MIN, MAX, and PREF.

Each new size will be calculated using:

      size[i] = pref[i] + delta[i]

where each individual delta[i] is calculated according to:

If (DELTA < 0) we are in shrink mode where:

                    DELTA
      delta[i] = ------------ * (pref[i] - min[i])
                 (PREF - MIN)

If (DELTA > 0) we are in expand mode where:

                    DELTA
      delta[i] = ------------ * (max[i] - pref[i])
                  (MAX - PREF)

The overall effect is that the total size moves that same percentage, k, towards the total minimum or maximum and that percentage guarantees accomodation of the required space, DELTA.

Details

Naive evaluation of the formulae presented here would be subject to the aggregated rounding errors caused by doing this operation in finite precision (using ints). To deal with this, the multiplying factor above, is constantly recalculated and this takes account of the rounding errors in the previous iterations. The result is an algorithm that produces a set of integers whose values exactly sum to the suppliedtargetSize, and does so by spreading the rounding errors evenly over the given elements.

When the MAX and MIN bounds are hit

When targetSize is outside the [MIN, MAX] range, the algorithm sets all sizes to their appropriate limiting value (maximum or minimum).

Overrides:

[doLayout](../../java/awt/Container.html#doLayout%28%29) in class [Container](../../java/awt/Container.html "class in java.awt")

See Also:

LayoutManager.layoutContainer(java.awt.Container), Container.setLayout(java.awt.LayoutManager), Container.validate()

sizeColumnsToFit

@Deprecated public void sizeColumnsToFit(boolean lastColumnOnly)

Deprecated. As of Swing version 1.0.3, replaced by doLayout().

Sizes the table columns to fit the available space.

See Also:

doLayout()

sizeColumnsToFit

public void sizeColumnsToFit(int resizingColumn)

Obsolete as of Java 2 platform v1.4. Please use thedoLayout() method instead.

Parameters:

resizingColumn - the column whose resizing made this adjustment necessary or -1 if there is no such column

See Also:

doLayout()

getToolTipText

public String getToolTipText(MouseEvent event)

Overrides JComponent's getToolTipText method in order to allow the renderer's tips to be used if it has text set.

Note: For JTable to properly display tooltips of its renderersJTable must be a registered component with theToolTipManager. This is done automatically in initializeLocalVars, but if at a later point JTable is toldsetToolTipText(null) it will unregister the table component, and no tips from renderers will display anymore.

Overrides:

[getToolTipText](../../javax/swing/JComponent.html#getToolTipText%28java.awt.event.MouseEvent%29) in class [JComponent](../../javax/swing/JComponent.html "class in javax.swing")

See Also:

JComponent.getToolTipText()

setSurrendersFocusOnKeystroke

public void setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke)

Sets whether editors in this JTable get the keyboard focus when an editor is activated as a result of the JTable forwarding keyboard events for a cell. By default, this property is false, and the JTable retains the focus unless the cell is clicked.

Parameters:

surrendersFocusOnKeystroke - true if the editor should get the focus when keystrokes cause the editor to be activated

See Also:

getSurrendersFocusOnKeystroke()

getSurrendersFocusOnKeystroke

public boolean getSurrendersFocusOnKeystroke()

Returns true if the editor should get the focus when keystrokes cause the editor to be activated

Returns:

true if the editor should get the focus when keystrokes cause the editor to be activated

See Also:

setSurrendersFocusOnKeystroke(boolean)

editCellAt

public boolean editCellAt(int row, int column)

Programmatically starts editing the cell at row andcolumn, if those indices are in the valid range, and the cell at those indices is editable. Note that this is a convenience method foreditCellAt(int, int, null).

Parameters:

row - the row to be edited

column - the column to be edited

Returns:

false if for any reason the cell cannot be edited, or if the indices are invalid

editCellAt

public boolean editCellAt(int row, int column, EventObject e)

Programmatically starts editing the cell at row andcolumn, if those indices are in the valid range, and the cell at those indices is editable. To prevent the JTable from editing a particular table, column or cell value, return false from the isCellEditable method in the TableModel interface.

Parameters:

row - the row to be edited

column - the column to be edited

e - event to pass into shouldSelectCell; note that as of Java 2 platform v1.2, the call toshouldSelectCell is no longer made

Returns:

false if for any reason the cell cannot be edited, or if the indices are invalid

isEditing

public boolean isEditing()

Returns true if a cell is being edited.

Returns:

true if the table is editing a cell

See Also:

editingColumn, editingRow

getEditorComponent

public Component getEditorComponent()

Returns the component that is handling the editing session. If nothing is being edited, returns null.

Returns:

Component handling editing session

getEditingColumn

public int getEditingColumn()

Returns the index of the column that contains the cell currently being edited. If nothing is being edited, returns -1.

Returns:

the index of the column that contains the cell currently being edited; returns -1 if nothing being edited

See Also:

editingRow

getEditingRow

public int getEditingRow()

Returns the index of the row that contains the cell currently being edited. If nothing is being edited, returns -1.

Returns:

the index of the row that contains the cell currently being edited; returns -1 if nothing being edited

See Also:

editingColumn

getUI

public TableUI getUI()

Returns the L&F object that renders this component.

Returns:

the TableUI object that renders this component

setUI

public void setUI(TableUI ui)

Sets the L&F object that renders this component and repaints.

Parameters:

ui - the TableUI L&F object

See Also:

UIDefaults.getUI(javax.swing.JComponent)

updateUI

public void updateUI()

Notification from the UIManager that the L&F has changed. Replaces the current UI object with the latest version from theUIManager.

Overrides:

[updateUI](../../javax/swing/JComponent.html#updateUI%28%29) in class [JComponent](../../javax/swing/JComponent.html "class in javax.swing")

See Also:

JComponent.updateUI()

getUIClassID

public String getUIClassID()

Returns the suffix used to construct the name of the L&F class used to render this component.

Overrides:

[getUIClassID](../../javax/swing/JComponent.html#getUIClassID%28%29) in class [JComponent](../../javax/swing/JComponent.html "class in javax.swing")

Returns:

the string "TableUI"

See Also:

JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)

setModel

public void setModel(TableModel dataModel)

Sets the data model for this table to newModel and registers with it for listener notifications from the new data model.

Parameters:

dataModel - the new data source for this table

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if newModel is null

See Also:

getModel()

getModel

public TableModel getModel()

Returns the TableModel that provides the data displayed by thisJTable.

Returns:

the TableModel that provides the data displayed by this JTable

See Also:

setModel(javax.swing.table.TableModel)

setColumnModel

public void setColumnModel(TableColumnModel columnModel)

Sets the column model for this table to newModel and registers for listener notifications from the new column model. Also sets the column model of the JTableHeader to columnModel.

Parameters:

columnModel - the new data source for this table

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if columnModel is null

See Also:

getColumnModel()

getColumnModel

public TableColumnModel getColumnModel()

Returns the TableColumnModel that contains all column information of this table.

Returns:

the object that provides the column state of the table

See Also:

setColumnModel(javax.swing.table.TableColumnModel)

setSelectionModel

public void setSelectionModel(ListSelectionModel newModel)

Sets the row selection model for this table to newModel and registers for listener notifications from the new selection model.

Parameters:

newModel - the new selection model

Throws:

[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang") - if newModel is null

See Also:

getSelectionModel()

getSelectionModel

public ListSelectionModel getSelectionModel()

Returns the ListSelectionModel that is used to maintain row selection state.

Returns:

the object that provides row selection state, null if row selection is not allowed

See Also:

setSelectionModel(javax.swing.ListSelectionModel)

tableChanged

public void tableChanged(TableModelEvent e)

Invoked when this table's TableModel generates a TableModelEvent. The TableModelEvent should be constructed in the coordinate system of the model; the appropriate mapping to the view coordinate system is performed by this JTable when it receives the event.

Application code will not use these methods explicitly, they are used internally by JTable.

Note that as of 1.3, this method clears the selection, if any.

Specified by:

[tableChanged](../../javax/swing/event/TableModelListener.html#tableChanged%28javax.swing.event.TableModelEvent%29) in interface [TableModelListener](../../javax/swing/event/TableModelListener.html "interface in javax.swing.event")

columnAdded

public void columnAdded(TableColumnModelEvent e)

Invoked when a column is added to the table column model.

Application code will not use these methods explicitly, they are used internally by JTable.

Specified by:

[columnAdded](../../javax/swing/event/TableColumnModelListener.html#columnAdded%28javax.swing.event.TableColumnModelEvent%29) in interface [TableColumnModelListener](../../javax/swing/event/TableColumnModelListener.html "interface in javax.swing.event")

See Also:

TableColumnModelListener

columnRemoved

public void columnRemoved(TableColumnModelEvent e)

Invoked when a column is removed from the table column model.

Application code will not use these methods explicitly, they are used internally by JTable.

Specified by:

[columnRemoved](../../javax/swing/event/TableColumnModelListener.html#columnRemoved%28javax.swing.event.TableColumnModelEvent%29) in interface [TableColumnModelListener](../../javax/swing/event/TableColumnModelListener.html "interface in javax.swing.event")

See Also:

TableColumnModelListener

columnMoved

public void columnMoved(TableColumnModelEvent e)

Invoked when a column is repositioned. If a cell is being edited, then editing is stopped and the cell is redrawn.

Application code will not use these methods explicitly, they are used internally by JTable.

Specified by:

[columnMoved](../../javax/swing/event/TableColumnModelListener.html#columnMoved%28javax.swing.event.TableColumnModelEvent%29) in interface [TableColumnModelListener](../../javax/swing/event/TableColumnModelListener.html "interface in javax.swing.event")

Parameters:

e - the event received

See Also:

TableColumnModelListener

columnMarginChanged

public void columnMarginChanged(ChangeEvent e)

Invoked when a column is moved due to a margin change. If a cell is being edited, then editing is stopped and the cell is redrawn.

Application code will not use these methods explicitly, they are used internally by JTable.

Specified by:

[columnMarginChanged](../../javax/swing/event/TableColumnModelListener.html#columnMarginChanged%28javax.swing.event.ChangeEvent%29) in interface [TableColumnModelListener](../../javax/swing/event/TableColumnModelListener.html "interface in javax.swing.event")

Parameters:

e - the event received

See Also:

TableColumnModelListener

columnSelectionChanged

public void columnSelectionChanged(ListSelectionEvent e)

Invoked when the selection model of the TableColumnModel is changed.

Application code will not use these methods explicitly, they are used internally by JTable.

Specified by:

[columnSelectionChanged](../../javax/swing/event/TableColumnModelListener.html#columnSelectionChanged%28javax.swing.event.ListSelectionEvent%29) in interface [TableColumnModelListener](../../javax/swing/event/TableColumnModelListener.html "interface in javax.swing.event")

Parameters:

e - the event received

See Also:

TableColumnModelListener

valueChanged

public void valueChanged(ListSelectionEvent e)

Invoked when the row selection changes -- repaints to show the new selection.

Application code will not use these methods explicitly, they are used internally by JTable.

Specified by:

[valueChanged](../../javax/swing/event/ListSelectionListener.html#valueChanged%28javax.swing.event.ListSelectionEvent%29) in interface [ListSelectionListener](../../javax/swing/event/ListSelectionListener.html "interface in javax.swing.event")

Parameters:

e - the event received

See Also:

ListSelectionListener

editingStopped

public void editingStopped(ChangeEvent e)

Invoked when editing is finished. The changes are saved and the editor is discarded.

Application code will not use these methods explicitly, they are used internally by JTable.

Specified by:

[editingStopped](../../javax/swing/event/CellEditorListener.html#editingStopped%28javax.swing.event.ChangeEvent%29) in interface [CellEditorListener](../../javax/swing/event/CellEditorListener.html "interface in javax.swing.event")

Parameters:

e - the event received

See Also:

CellEditorListener

editingCanceled

public void editingCanceled(ChangeEvent e)

Invoked when editing is canceled. The editor object is discarded and the cell is rendered once again.

Application code will not use these methods explicitly, they are used internally by JTable.

Specified by:

[editingCanceled](../../javax/swing/event/CellEditorListener.html#editingCanceled%28javax.swing.event.ChangeEvent%29) in interface [CellEditorListener](../../javax/swing/event/CellEditorListener.html "interface in javax.swing.event")

Parameters:

e - the event received

See Also:

CellEditorListener

setPreferredScrollableViewportSize

public void setPreferredScrollableViewportSize(Dimension size)

Sets the preferred size of the viewport for this table.

Parameters:

size - a Dimension object specifying the preferredSize of aJViewport whose view is this table

See Also:

Scrollable.getPreferredScrollableViewportSize()

getPreferredScrollableViewportSize

public Dimension getPreferredScrollableViewportSize()

Returns the preferred size of the viewport for this table.

Specified by:

[getPreferredScrollableViewportSize](../../javax/swing/Scrollable.html#getPreferredScrollableViewportSize%28%29) in interface [Scrollable](../../javax/swing/Scrollable.html "interface in javax.swing")

Returns:

a Dimension object containing the preferredSize of the JViewport which displays this table

See Also:

Scrollable.getPreferredScrollableViewportSize()

getScrollableUnitIncrement

public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction)

Returns the scroll increment (in pixels) that completely exposes one new row or column (depending on the orientation).

This method is called each time the user requests a unit scroll.

Specified by:

[getScrollableUnitIncrement](../../javax/swing/Scrollable.html#getScrollableUnitIncrement%28java.awt.Rectangle, int, int%29) in interface [Scrollable](../../javax/swing/Scrollable.html "interface in javax.swing")

Parameters:

visibleRect - the view area visible within the viewport

orientation - either SwingConstants.VERTICAL or SwingConstants.HORIZONTAL

direction - less than zero to scroll up/left, greater than zero for down/right

Returns:

the "unit" increment for scrolling in the specified direction

See Also:

[Scrollable.getScrollableUnitIncrement(java.awt.Rectangle, int, int)](../../javax/swing/Scrollable.html#getScrollableUnitIncrement%28java.awt.Rectangle, int, int%29)

getScrollableBlockIncrement

public int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction)

Returns visibleRect.height orvisibleRect.width, depending on this table's orientation. Note that as of Swing 1.1.1 (Java 2 v 1.2.2) the value returned will ensure that the viewport is cleanly aligned on a row boundary.

Specified by:

[getScrollableBlockIncrement](../../javax/swing/Scrollable.html#getScrollableBlockIncrement%28java.awt.Rectangle, int, int%29) in interface [Scrollable](../../javax/swing/Scrollable.html "interface in javax.swing")

Parameters:

visibleRect - The view area visible within the viewport

orientation - Either SwingConstants.VERTICAL or SwingConstants.HORIZONTAL.

direction - Less than zero to scroll up/left, greater than zero for down/right.

Returns:

visibleRect.height orvisibleRect.width per the orientation

See Also:

[Scrollable.getScrollableBlockIncrement(java.awt.Rectangle, int, int)](../../javax/swing/Scrollable.html#getScrollableBlockIncrement%28java.awt.Rectangle, int, int%29)

getScrollableTracksViewportWidth

public boolean getScrollableTracksViewportWidth()

Returns false if autoResizeMode is set toAUTO_RESIZE_OFF, which indicates that the width of the viewport does not determine the width of the table. Otherwise returns true.

Specified by:

[getScrollableTracksViewportWidth](../../javax/swing/Scrollable.html#getScrollableTracksViewportWidth%28%29) in interface [Scrollable](../../javax/swing/Scrollable.html "interface in javax.swing")

Returns:

false if autoResizeMode is set to AUTO_RESIZE_OFF, otherwise returns true

See Also:

Scrollable.getScrollableTracksViewportWidth()

getScrollableTracksViewportHeight

public boolean getScrollableTracksViewportHeight()

Returns false to indicate that the height of the viewport does not determine the height of the table.

Specified by:

[getScrollableTracksViewportHeight](../../javax/swing/Scrollable.html#getScrollableTracksViewportHeight%28%29) in interface [Scrollable](../../javax/swing/Scrollable.html "interface in javax.swing")

Returns:

false

See Also:

Scrollable.getScrollableTracksViewportHeight()

processKeyBinding

protected boolean processKeyBinding(KeyStroke ks, KeyEvent e, int condition, boolean pressed)

Description copied from class: [JComponent](../../javax/swing/JComponent.html#processKeyBinding%28javax.swing.KeyStroke, java.awt.event.KeyEvent, int, boolean%29)

Invoked to process the key bindings for ks as the result of the KeyEvent e. This obtains the appropriate InputMap, gets the binding, gets the action from the ActionMap, and then (if the action is found and the component is enabled) invokes notifyAction to notify the action.

Overrides:

[processKeyBinding](../../javax/swing/JComponent.html#processKeyBinding%28javax.swing.KeyStroke, java.awt.event.KeyEvent, int, boolean%29) in class [JComponent](../../javax/swing/JComponent.html "class in javax.swing")

Parameters:

ks - the KeyStroke queried

e - the KeyEvent

condition - one of the following values:

pressed - true if the key is pressed

Returns:

true if there was a binding to an action, and the action was enabled

createDefaultRenderers

protected void createDefaultRenderers()

Creates default cell renderers for objects, numbers, doubles, dates, booleans, and icons.

See Also:

DefaultTableCellRenderer

createDefaultEditors

protected void createDefaultEditors()

Creates default cell editors for objects, numbers, and boolean values.

See Also:

DefaultCellEditor

initializeLocalVars

protected void initializeLocalVars()

Initializes table properties to their default values.

createDefaultDataModel

protected TableModel createDefaultDataModel()

Returns the default table model object, which is a DefaultTableModel. A subclass can override this method to return a different table model object.

Returns:

the default table model object

See Also:

DefaultTableModel

createDefaultColumnModel

protected TableColumnModel createDefaultColumnModel()

Returns the default column model object, which is a DefaultTableColumnModel. A subclass can override this method to return a different column model object.

Returns:

the default column model object

See Also:

DefaultTableColumnModel

createDefaultSelectionModel

protected ListSelectionModel createDefaultSelectionModel()

Returns the default selection model object, which is a DefaultListSelectionModel. A subclass can override this method to return a different selection model object.

Returns:

the default selection model object

See Also:

DefaultListSelectionModel

createDefaultTableHeader

protected JTableHeader createDefaultTableHeader()

Returns the default table header object, which is a JTableHeader. A subclass can override this method to return a different table header object.

Returns:

the default table header object

See Also:

JTableHeader

resizeAndRepaint

protected void resizeAndRepaint()

Equivalent to revalidate followed by repaint.

getCellEditor

public TableCellEditor getCellEditor()

Returns the cell editor.

Returns:

the TableCellEditor that does the editing

See Also:

cellEditor

setCellEditor

public void setCellEditor(TableCellEditor anEditor)

Sets the cellEditor variable.

Parameters:

anEditor - the TableCellEditor that does the editing

See Also:

cellEditor

setEditingColumn

public void setEditingColumn(int aColumn)

Sets the editingColumn variable.

Parameters:

aColumn - the column of the cell to be edited

See Also:

editingColumn

setEditingRow

public void setEditingRow(int aRow)

Sets the editingRow variable.

Parameters:

aRow - the row of the cell to be edited

See Also:

editingRow

getCellRenderer

public TableCellRenderer getCellRenderer(int row, int column)

Returns an appropriate renderer for the cell specified by this row and column. If the TableColumn for this column has a non-null renderer, returns that. If not, finds the class of the data in this column (using getColumnClass) and returns the default renderer for this type of data.

Note: Throughout the table package, the internal implementations always use this method to provide renderers so that this default behavior can be safely overridden by a subclass.

Parameters:

row - the row of the cell to render, where 0 is the first row

column - the column of the cell to render, where 0 is the first column

Returns:

the assigned renderer; if null returns the default renderer for this type of object

See Also:

DefaultTableCellRenderer, TableColumn.setCellRenderer(javax.swing.table.TableCellRenderer), [setDefaultRenderer(java.lang.Class, javax.swing.table.TableCellRenderer)](../../javax/swing/JTable.html#setDefaultRenderer%28java.lang.Class, javax.swing.table.TableCellRenderer%29)

prepareRenderer

public Component prepareRenderer(TableCellRenderer renderer, int row, int column)

Prepares the renderer by querying the data model for the value and selection state of the cell at row, column. Returns the component (may be a Component or a JComponent) under the event location.

Note: Throughout the table package, the internal implementations always use this method to prepare renderers so that this default behavior can be safely overridden by a subclass.

Parameters:

renderer - the TableCellRenderer to prepare

row - the row of the cell to render, where 0 is the first row

column - the column of the cell to render, where 0 is the first column

Returns:

the Component under the event location

getCellEditor

public TableCellEditor getCellEditor(int row, int column)

Returns an appropriate editor for the cell specified byrow and column. If theTableColumn for this column has a non-null editor, returns that. If not, finds the class of the data in this column (using getColumnClass) and returns the default editor for this type of data.

Note: Throughout the table package, the internal implementations always use this method to provide editors so that this default behavior can be safely overridden by a subclass.

Parameters:

row - the row of the cell to edit, where 0 is the first row

column - the column of the cell to edit, where 0 is the first column

Returns:

the editor for this cell; if null return the default editor for this type of cell

See Also:

DefaultCellEditor

prepareEditor

public Component prepareEditor(TableCellEditor editor, int row, int column)

Prepares the editor by querying the data model for the value and selection state of the cell at row, column.

Note: Throughout the table package, the internal implementations always use this method to prepare editors so that this default behavior can be safely overridden by a subclass.

Parameters:

editor - the TableCellEditor to set up

row - the row of the cell to edit, where 0 is the first row

column - the column of the cell to edit, where 0 is the first column

Returns:

the Component being edited

removeEditor

public void removeEditor()

Discards the editor object and frees the real estate it used for cell rendering.

paramString

protected String paramString()

Returns a string representation of this table. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

Overrides:

[paramString](../../javax/swing/JComponent.html#paramString%28%29) in class [JComponent](../../javax/swing/JComponent.html "class in javax.swing")

Returns:

a string representation of this table

print

public boolean print() throws PrinterException

A convenience method that displays a printing dialog, and then prints this JTable in mode PrintMode.FIT_WIDTH, with no header or footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing.

Note: In headless mode, no dialogs will be shown.

Returns:

true, unless printing is cancelled by the user

Throws:

[PrinterException](../../java/awt/print/PrinterException.html "class in java.awt.print") - if an error in the print system causes the job to be aborted

Since:

1.5

See Also:

[print(JTable.PrintMode, MessageFormat, MessageFormat, boolean, PrintRequestAttributeSet, boolean)](../../javax/swing/JTable.html#print%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat, boolean, javax.print.attribute.PrintRequestAttributeSet, boolean%29), [getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)](../../javax/swing/JTable.html#getPrintable%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat%29)

public boolean print(JTable.PrintMode printMode) throws PrinterException

A convenience method that displays a printing dialog, and then prints this JTable in the given printing mode, with no header or footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing.

Note: In headless mode, no dialogs will be shown.

Parameters:

printMode - the printing mode that the printable should use

Returns:

true, unless printing is cancelled by the user

Throws:

[PrinterException](../../java/awt/print/PrinterException.html "class in java.awt.print") - if an error in the print system causes the job to be aborted

Since:

1.5

See Also:

[print(JTable.PrintMode, MessageFormat, MessageFormat, boolean, PrintRequestAttributeSet, boolean)](../../javax/swing/JTable.html#print%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat, boolean, javax.print.attribute.PrintRequestAttributeSet, boolean%29), [getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)](../../javax/swing/JTable.html#getPrintable%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat%29)

public boolean print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat) throws PrinterException

A convenience method that displays a printing dialog, and then prints this JTable in the given printing mode, with the specified header and footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing.

Note: In headless mode, no dialogs will be shown.

Parameters:

printMode - the printing mode that the printable should use

headerFormat - a MessageFormat specifying the text to be used in printing a header, or null for none

footerFormat - a MessageFormat specifying the text to be used in printing a footer, or null for none

Returns:

true, unless printing is cancelled by the user

Throws:

[PrinterException](../../java/awt/print/PrinterException.html "class in java.awt.print") - if an error in the print system causes the job to be aborted

Since:

1.5

See Also:

[print(JTable.PrintMode, MessageFormat, MessageFormat, boolean, PrintRequestAttributeSet, boolean)](../../javax/swing/JTable.html#print%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat, boolean, javax.print.attribute.PrintRequestAttributeSet, boolean%29), [getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)](../../javax/swing/JTable.html#getPrintable%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat%29)

public boolean print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat, boolean showPrintDialog, PrintRequestAttributeSet attr, boolean interactive) throws PrinterException, HeadlessException

Print this JTable. Takes steps that the majority of developers would take in order to print a JTable. In short, it prepares the table, calls getPrintable to fetch an appropriate Printable, and then sends it to the printer.

A boolean parameter allows you to specify whether or not a printing dialog is displayed to the user. When it is, the user may use the dialog to change printing attributes or even cancel the print. Another parameter allows for printing attributes to be specified directly. This can be used either to provide the initial values for the print dialog, or to supply any needed attributes when the dialog is not shown.

A second boolean parameter allows you to specify whether or not to perform printing in an interactive mode. If true, a modal progress dialog, with an abort option, is displayed for the duration of printing . This dialog also prevents any user action which may affect the table. However, it can not prevent the table from being modified by code (for example, another thread that posts updates usingSwingUtilities.invokeLater). It is therefore the responsibility of the developer to ensure that no other code modifies the table in any way during printing (invalid modifications include changes in: size, renderers, or underlying data). Printing behavior is undefined when the table is changed during printing.

If false is specified for this parameter, no dialog will be displayed and printing will begin immediately on the event-dispatch thread. This blocks any other events, including repaints, from being processed until printing is complete. Although this effectively prevents the table from being changed, it doesn't provide a good user experience. For this reason, specifying false is only recommended when printing from an application with no visible GUI.

Note: Attempting to show the printing dialog or run interactively, while in headless mode, will result in a HeadlessException.

Before fetching the printable, this method prepares the table in order to get the most desirable printed result. If the table is currently in an editing mode, it terminates the editing as gracefully as possible. It also ensures that the the table's current selection and focused cell are not indicated in the printed output. This is handled on the view level, and only for the duration of the printing, thus no notification needs to be sent to the selection models.

See [getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)](../../javax/swing/JTable.html#getPrintable%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat%29) for further description on how the table is printed.

Parameters:

printMode - the printing mode that the printable should use

headerFormat - a MessageFormat specifying the text to be used in printing a header, or null for none

footerFormat - a MessageFormat specifying the text to be used in printing a footer, or null for none

showPrintDialog - whether or not to display a print dialog

attr - a PrintRequestAttributeSet specifying any printing attributes, or null for none

interactive - whether or not to print in an interactive mode

Returns:

true, unless printing is cancelled by the user

Throws:

[PrinterException](../../java/awt/print/PrinterException.html "class in java.awt.print") - if an error in the print system causes the job to be aborted

[HeadlessException](../../java/awt/HeadlessException.html "class in java.awt") - if the method is asked to show a printing dialog or run interactively, andGraphicsEnvironment.isHeadless returns true

Since:

1.5

See Also:

[getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)](../../javax/swing/JTable.html#getPrintable%28javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat%29), GraphicsEnvironment.isHeadless()

getPrintable

public Printable getPrintable(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat)

Return a Printable for use in printing this JTable.

The Printable can be requested in one of two printing modes. In both modes, it spreads table rows naturally in sequence across multiple pages, fitting as many rows as possible per page.PrintMode.NORMAL specifies that the table be printed at its current size. In this mode, there may be a need to spread columns across pages in a similar manner to that of the rows. When the need arises, columns are distributed in an order consistent with the table's ComponentOrientation.PrintMode.FIT_WIDTH specifies that the output be scaled smaller, if necessary, to fit the table's entire width (and thereby all columns) on each page. Width and height are scaled equally, maintaining the aspect ratio of the output.

The Printable heads the portion of table on each page with the appropriate section from the table's JTableHeader, if it has one.

Header and footer text can be added to the output by providingMessageFormat arguments. The printing code requests Strings from the formats, providing a single item which may be included in the formatted string: an Integer representing the current page number.

You are encouraged to read the documentation forMessageFormat as some characters, such as single-quote, are special and need to be escaped.

Here's an example of creating a MessageFormat that can be used to print "Duke's Table: Page - " and the current page number:

 // notice the escaping of the single quote
 // notice how the page number is included with "{0}"
 MessageFormat format = new MessageFormat("Duke''s Table: Page - {0}");

The Printable constrains what it draws to the printable area of each page that it prints. Under certain circumstances, it may find it impossible to fit all of a page's content into that area. In these cases the output may be clipped, but the implementation makes an effort to do something reasonable. Here are a few situations where this is known to occur, and how they may be handled by this particular implementation:

It is entirely valid for this Printable to be wrapped inside another in order to create complex reports and documents. You may even request that different pages be rendered into different sized printable areas. The implementation must be prepared to handle this (possibly by doing its layout calculations on the fly). However, providing different heights to each page will likely not work well with PrintMode.NORMAL when it has to spread columns across pages.

It is important to note that this Printable prints the table at its current visual state, using the table's existing renderers.Before calling this method, you may wish to first modify the state of the table (such as to change the renderers, cancel editing, or hide the selection).

You must not, however, modify the table in any way after this Printable is fetched (invalid modifications include changes in: size, renderers, or underlying data). The behavior of the returned Printable is undefined once the table has been changed.

Here's a simple example that calls this method to fetch aPrintable, shows a cross-platform print dialog, and then prints the Printable unless the user cancels the dialog:

 // prepare the table for printing here first (for example, hide selection)

 // wrap in a try/finally so table can be restored even if something fails
 try {
     // fetch the printable
     Printable printable = table.getPrintable(JTable.PrintMode.FIT_WIDTH,
                                              new MessageFormat("My Table"),
                                              new MessageFormat("Page - {0}"));

     // fetch a PrinterJob
     PrinterJob job = PrinterJob.getPrinterJob();

     // set the Printable on the PrinterJob
     job.setPrintable(printable);

     // create an attribute set to store attributes from the print dialog
     PrintRequestAttributeSet attr = new HashPrintRequestAttributeSet();

     // display a print dialog and record whether or not the user cancels it
     boolean printAccepted = job.printDialog(attr);

     // if the user didn't cancel the dialog
     if (printAccepted) {
         // do the printing (may need to handle PrinterException)
         job.print(attr);
     }
 } finally {
     // restore the original table state here (for example, restore selection)
 }

Parameters:

printMode - the printing mode that the printable should use

headerFormat - a MessageFormat specifying the text to be used in printing a header, or null for none

footerFormat - a MessageFormat specifying the text to be used in printing a footer, or null for none

Returns:

a Printable for printing this JTable

Since:

1.5

See Also:

Printable, PrinterJob

getAccessibleContext

public AccessibleContext getAccessibleContext()

Gets the AccessibleContext associated with this JTable. For tables, the AccessibleContext takes the form of an AccessibleJTable. A new AccessibleJTable instance is created if necessary.

Specified by:

[getAccessibleContext](../../javax/accessibility/Accessible.html#getAccessibleContext%28%29) in interface [Accessible](../../javax/accessibility/Accessible.html "interface in javax.accessibility")

Overrides:

[getAccessibleContext](../../javax/swing/JComponent.html#getAccessibleContext%28%29) in class [JComponent](../../javax/swing/JComponent.html "class in javax.swing")

Returns:

an AccessibleJTable that serves as the AccessibleContext of this JTable

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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