TableModel (Java Platform SE 8 ) (original) (raw)

• All Known Implementing Classes:
  AbstractTableModel, DefaultTableModel

public interface TableModel
The TableModel interface specifies the methods theJTable will use to interrogate a tabular data model.
The JTable can be set up to display any data model which implements theTableModel interface with a couple of lines of code:
TableModel myData = new MyTableModel();
JTable table = new JTable(myData);

For further documentation, see Creating a Table Model in The Java Tutorial.
See Also:
JTable

• • Method Summary

  All Methods Instance Methods Abstract Methods

  Modifier and Type	Method	Description
  void	addTableModelListener(TableModelListener l)	Adds a listener to the list that is notified each time a change to the data model occurs.
  Class<?>	getColumnClass(int columnIndex)	Returns the most specific superclass for all the cell values in the column.
  int	getColumnCount()	Returns the number of columns in the model.
  String	getColumnName(int columnIndex)	Returns the name of the column at columnIndex.
  int	getRowCount()	Returns the number of rows in the model.
  Object	getValueAt(int rowIndex, int columnIndex)	Returns the value for the cell at columnIndex androwIndex.
  boolean	isCellEditable(int rowIndex, int columnIndex)	Returns true if the cell at rowIndex andcolumnIndex is editable.
  void	removeTableModelListener(TableModelListener l)	Removes a listener from the list that is notified each time a change to the data model occurs.
  void	setValueAt(Object aValue, int rowIndex, int columnIndex)	Sets the value in the cell at columnIndex androwIndex to aValue.

• • Method Detail

     * #### getRowCount  
     int getRowCount()  
     Returns the number of rows in the model. A`JTable` uses this method to determine how many rows it should display. This method should be quick, as it is called frequently during rendering.  
     Returns:  
     the number of rows in the model  
     See Also:  
     [getColumnCount()](../../../javax/swing/table/TableModel.html#getColumnCount--)  
     * #### getColumnCount  
     int getColumnCount()  
     Returns the number of columns in the model. A`JTable` uses this method to determine how many columns it should create and display by default.  
     Returns:  
     the number of columns in the model  
     See Also:  
     [getRowCount()](../../../javax/swing/table/TableModel.html#getRowCount--)  
     * #### getColumnName  
     [String](../../../java/lang/String.html "class in java.lang") getColumnName(int columnIndex)  
     Returns the name of the column at `columnIndex`. This is used to initialize the table's column header name. Note: this name does not need to be unique; two columns in a table can have the same name.  
     Parameters:  
     `columnIndex` \- the index of the column  
     Returns:  
     the name of the column  
     * #### getColumnClass  
     [Class](../../../java/lang/Class.html "class in java.lang")<?> getColumnClass(int columnIndex)  
     Returns the most specific superclass for all the cell values in the column. This is used by the `JTable` to set up a default renderer and editor for the column.  
     Parameters:  
     `columnIndex` \- the index of the column  
     Returns:  
     the common ancestor class of the object values in the model.  
     * #### isCellEditable  
     boolean isCellEditable(int rowIndex,  
                            int columnIndex)  
     Returns true if the cell at `rowIndex` and`columnIndex` is editable. Otherwise, `setValueAt` on the cell will not change the value of that cell.  
     Parameters:  
     `rowIndex` \- the row whose value to be queried  
     `columnIndex` \- the column whose value to be queried  
     Returns:  
     true if the cell is editable  
     See Also:  
     [setValueAt(java.lang.Object, int, int)](../../../javax/swing/table/TableModel.html#setValueAt-java.lang.Object-int-int-)  
     * #### getValueAt  
     [Object](../../../java/lang/Object.html "class in java.lang") getValueAt(int rowIndex,  
                       int columnIndex)  
     Returns the value for the cell at `columnIndex` and`rowIndex`.  
     Parameters:  
     `rowIndex` \- the row whose value is to be queried  
     `columnIndex` \- the column whose value is to be queried  
     Returns:  
     the value Object at the specified cell  
     * #### setValueAt  
     void setValueAt([Object](../../../java/lang/Object.html "class in java.lang") aValue,  
                     int rowIndex,  
                     int columnIndex)  
     Sets the value in the cell at `columnIndex` and`rowIndex` to `aValue`.  
     Parameters:  
     `aValue` \- the new value  
     `rowIndex` \- the row whose value is to be changed  
     `columnIndex` \- the column whose value is to be changed  
     See Also:  
     [getValueAt(int, int)](../../../javax/swing/table/TableModel.html#getValueAt-int-int-), [isCellEditable(int, int)](../../../javax/swing/table/TableModel.html#isCellEditable-int-int-)  
     * #### addTableModelListener  
     void addTableModelListener([TableModelListener](../../../javax/swing/event/TableModelListener.html "interface in javax.swing.event") l)  
     Adds a listener to the list that is notified each time a change to the data model occurs.  
     Parameters:  
     `l` \- the TableModelListener  
     * #### removeTableModelListener  
     void removeTableModelListener([TableModelListener](../../../javax/swing/event/TableModelListener.html "interface in javax.swing.event") l)  
     Removes a listener from the list that is notified each time a change to the data model occurs.  
     Parameters:  
     `l` \- the TableModelListener

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