JScrollBar (Java SE 19 & JDK 19) (original) (raw)

All Implemented Interfaces:

[Adjustable](../../java/awt/Adjustable.html "interface in java.awt"), [ImageObserver](../../java/awt/image/ImageObserver.html "interface in java.awt.image"), [MenuContainer](../../java/awt/MenuContainer.html "interface in java.awt"), [Serializable](../../../java.base/java/io/Serializable.html "interface in java.io"), [Accessible](../accessibility/Accessible.html "interface in javax.accessibility")

Direct Known Subclasses:

[JScrollPane.ScrollBar](JScrollPane.ScrollBar.html "class in javax.swing")

An implementation of a scrollbar. The user positions the knob in the scrollbar to determine the contents of the viewing area. The program typically adjusts the display so that the end of the scrollbar represents the end of the displayable contents, or 100% of the contents. The start of the scrollbar is the beginning of the displayable contents, or 0%. The position of the knob within those bounds then translates to the corresponding percentage of the displayable contents.

Typically, as the position of the knob in the scrollbar changes a corresponding change is made to the position of the JViewport on the underlying view, changing the contents of the JViewport.

Warning: Swing is not thread safe. For more information see Swing's Threading Policy.

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 JavaBeans has been added to the java.beans package. Please see XMLEncoder.

Since:

1.2

See Also:

• JScrollPane

• Nested Class Summary

Nested Classes
protected class
This class implements accessibility support for theJScrollBar class.

• Field Summary

Fields
protected int
Stores the amount by which the value of the scrollbar is changed upon a block (usually "page") up/down request.
The model that represents the scrollbar's minimum, maximum, extent (aka "visibleAmount") and current value.
protected int
Orientation of this scrollBar.
protected int
Stores the amount by which the value of the scrollbar is changed upon a unit up/down request.

• Constructor Summary

Constructors
Creates a vertical scrollbar with the following initial values:
[JScrollBar](#%3Cinit%3E%28int%29)(int orientation)
Creates a scrollbar with the specified orientation and the following initial values:
[JScrollBar](#%3Cinit%3E%28int,int,int,int,int%29)(int orientation, int value, int extent, int min, int max)
Creates a scrollbar with the specified orientation, value, extent, minimum, and maximum.

• Method Summary

void
Adds an AdjustmentListener.
protected void
[fireAdjustmentValueChanged](#fireAdjustmentValueChanged%28int,int,int%29)(int id, int type, int value)
Notify listeners that the scrollbar's model has changed.
Gets the AccessibleContext associated with this JScrollBar.
Returns an array of all the AdjustmentListeners added to this JScrollBar with addAdjustmentListener().
int
For backwards compatibility with java.awt.Scrollbar.
int
[getBlockIncrement](#getBlockIncrement%28int%29)(int direction)
Returns the amount to change the scrollbar's value by, given a block (usually "page") up/down request.
int
The maximum value of the scrollbar is maximum - extent.
The scrollbar is flexible along it's scrolling axis and rigid along the other axis.
int
Returns the minimum value supported by the scrollbar (usually zero).
The scrollbar is flexible along it's scrolling axis and rigid along the other axis.
[getModel](#getModel%28%29)()
Returns data model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.
int
Returns the component's orientation (horizontal or vertical).
[getUI](#getUI%28%29)()
Returns the delegate that implements the look and feel for this component.
Returns the name of the LookAndFeel class for this component.
int
For backwards compatibility with java.awt.Scrollbar.
int
[getUnitIncrement](#getUnitIncrement%28int%29)(int direction)
Returns the amount to change the scrollbar's value by, given a unit up/down request.
int
[getValue](#getValue%28%29)()
Returns the scrollbar's value.
boolean
True if the scrollbar knob is being dragged.
int
Returns the scrollbar's extent, aka its "visibleAmount".
Returns a string representation of this JScrollBar.
void
Removes an AdjustmentEvent listener.
void
[setBlockIncrement](#setBlockIncrement%28int%29)(int blockIncrement)
Sets the blockIncrement property.
void
[setEnabled](#setEnabled%28boolean%29)(boolean x)
Enables the component so that the knob position can be changed.
void
[setMaximum](#setMaximum%28int%29)(int maximum)
Sets the model's maximum property.
void
[setMinimum](#setMinimum%28int%29)(int minimum)
Sets the model's minimum property.
void
Sets the model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.
void
[setOrientation](#setOrientation%28int%29)(int orientation)
Set the scrollbar's orientation to either VERTICAL or HORIZONTAL.
void
Sets the L&F object that renders this component.
void
[setUnitIncrement](#setUnitIncrement%28int%29)(int unitIncrement)
Sets the unitIncrement property.
void
[setValue](#setValue%28int%29)(int value)
Sets the scrollbar's value.
void
[setValueIsAdjusting](#setValueIsAdjusting%28boolean%29)(boolean b)
Sets the model's valueIsAdjusting property.
void
[setValues](#setValues%28int,int,int,int%29)(int newValue, int newExtent, int newMin, int newMax)
Sets the four BoundedRangeModel properties after forcing the arguments to obey the usual constraints:
void
[setVisibleAmount](#setVisibleAmount%28int%29)(int extent)
Set the model's extent property.
void
[updateUI](#updateUI%28%29)()
Overrides JComponent.updateUI.

Methods declared in class javax.swing.JComponent

[addAncestorListener](JComponent.html#addAncestorListener%28javax.swing.event.AncestorListener%29), [addNotify](JComponent.html#addNotify%28%29), [addVetoableChangeListener](JComponent.html#addVetoableChangeListener%28java.beans.VetoableChangeListener%29), [computeVisibleRect](JComponent.html#computeVisibleRect%28java.awt.Rectangle%29), [contains](JComponent.html#contains%28int,int%29), [createToolTip](JComponent.html#createToolTip%28%29), [disable](JComponent.html#disable%28%29), [enable](JComponent.html#enable%28%29), [firePropertyChange](JComponent.html#firePropertyChange%28java.lang.String,boolean,boolean%29), [firePropertyChange](JComponent.html#firePropertyChange%28java.lang.String,int,int%29), [fireVetoableChange](JComponent.html#fireVetoableChange%28java.lang.String,java.lang.Object,java.lang.Object%29), [getActionForKeyStroke](JComponent.html#getActionForKeyStroke%28javax.swing.KeyStroke%29), [getActionMap](JComponent.html#getActionMap%28%29), [getAlignmentX](JComponent.html#getAlignmentX%28%29), [getAlignmentY](JComponent.html#getAlignmentY%28%29), [getAncestorListeners](JComponent.html#getAncestorListeners%28%29), [getAutoscrolls](JComponent.html#getAutoscrolls%28%29), [getBaseline](JComponent.html#getBaseline%28int,int%29), [getBaselineResizeBehavior](JComponent.html#getBaselineResizeBehavior%28%29), [getBorder](JComponent.html#getBorder%28%29), [getBounds](JComponent.html#getBounds%28java.awt.Rectangle%29), [getClientProperty](JComponent.html#getClientProperty%28java.lang.Object%29), [getComponentGraphics](JComponent.html#getComponentGraphics%28java.awt.Graphics%29), [getComponentPopupMenu](JComponent.html#getComponentPopupMenu%28%29), [getConditionForKeyStroke](JComponent.html#getConditionForKeyStroke%28javax.swing.KeyStroke%29), [getDebugGraphicsOptions](JComponent.html#getDebugGraphicsOptions%28%29), [getDefaultLocale](JComponent.html#getDefaultLocale%28%29), [getFontMetrics](JComponent.html#getFontMetrics%28java.awt.Font%29), [getGraphics](JComponent.html#getGraphics%28%29), [getHeight](JComponent.html#getHeight%28%29), [getInheritsPopupMenu](JComponent.html#getInheritsPopupMenu%28%29), [getInputMap](JComponent.html#getInputMap%28%29), [getInputMap](JComponent.html#getInputMap%28int%29), [getInputVerifier](JComponent.html#getInputVerifier%28%29), [getInsets](JComponent.html#getInsets%28%29), [getInsets](JComponent.html#getInsets%28java.awt.Insets%29), [getListeners](JComponent.html#getListeners%28java.lang.Class%29), [getLocation](JComponent.html#getLocation%28java.awt.Point%29), [getNextFocusableComponent](JComponent.html#getNextFocusableComponent%28%29), [getPopupLocation](JComponent.html#getPopupLocation%28java.awt.event.MouseEvent%29), [getPreferredSize](JComponent.html#getPreferredSize%28%29), [getRegisteredKeyStrokes](JComponent.html#getRegisteredKeyStrokes%28%29), [getRootPane](JComponent.html#getRootPane%28%29), [getSize](JComponent.html#getSize%28java.awt.Dimension%29), [getToolTipLocation](JComponent.html#getToolTipLocation%28java.awt.event.MouseEvent%29), [getToolTipText](JComponent.html#getToolTipText%28%29), [getToolTipText](JComponent.html#getToolTipText%28java.awt.event.MouseEvent%29), [getTopLevelAncestor](JComponent.html#getTopLevelAncestor%28%29), [getTransferHandler](JComponent.html#getTransferHandler%28%29), [getVerifyInputWhenFocusTarget](JComponent.html#getVerifyInputWhenFocusTarget%28%29), [getVetoableChangeListeners](JComponent.html#getVetoableChangeListeners%28%29), [getVisibleRect](JComponent.html#getVisibleRect%28%29), [getWidth](JComponent.html#getWidth%28%29), [getX](JComponent.html#getX%28%29), [getY](JComponent.html#getY%28%29), [grabFocus](JComponent.html#grabFocus%28%29), [hide](JComponent.html#hide%28%29), [isDoubleBuffered](JComponent.html#isDoubleBuffered%28%29), [isLightweightComponent](JComponent.html#isLightweightComponent%28java.awt.Component%29), [isManagingFocus](JComponent.html#isManagingFocus%28%29), [isOpaque](JComponent.html#isOpaque%28%29), [isOptimizedDrawingEnabled](JComponent.html#isOptimizedDrawingEnabled%28%29), [isPaintingForPrint](JComponent.html#isPaintingForPrint%28%29), [isPaintingOrigin](JComponent.html#isPaintingOrigin%28%29), [isPaintingTile](JComponent.html#isPaintingTile%28%29), [isRequestFocusEnabled](JComponent.html#isRequestFocusEnabled%28%29), [isValidateRoot](JComponent.html#isValidateRoot%28%29), [paint](JComponent.html#paint%28java.awt.Graphics%29), [paintBorder](JComponent.html#paintBorder%28java.awt.Graphics%29), [paintChildren](JComponent.html#paintChildren%28java.awt.Graphics%29), [paintComponent](JComponent.html#paintComponent%28java.awt.Graphics%29), [paintImmediately](JComponent.html#paintImmediately%28int,int,int,int%29), [paintImmediately](JComponent.html#paintImmediately%28java.awt.Rectangle%29), [print](JComponent.html#print%28java.awt.Graphics%29), [printAll](JComponent.html#printAll%28java.awt.Graphics%29), [printBorder](JComponent.html#printBorder%28java.awt.Graphics%29), [printChildren](JComponent.html#printChildren%28java.awt.Graphics%29), [printComponent](JComponent.html#printComponent%28java.awt.Graphics%29), [processComponentKeyEvent](JComponent.html#processComponentKeyEvent%28java.awt.event.KeyEvent%29), [processKeyBinding](JComponent.html#processKeyBinding%28javax.swing.KeyStroke,java.awt.event.KeyEvent,int,boolean%29), [processKeyEvent](JComponent.html#processKeyEvent%28java.awt.event.KeyEvent%29), [processMouseEvent](JComponent.html#processMouseEvent%28java.awt.event.MouseEvent%29), [processMouseMotionEvent](JComponent.html#processMouseMotionEvent%28java.awt.event.MouseEvent%29), [putClientProperty](JComponent.html#putClientProperty%28java.lang.Object,java.lang.Object%29), [registerKeyboardAction](JComponent.html#registerKeyboardAction%28java.awt.event.ActionListener,java.lang.String,javax.swing.KeyStroke,int%29), [registerKeyboardAction](JComponent.html#registerKeyboardAction%28java.awt.event.ActionListener,javax.swing.KeyStroke,int%29), [removeAncestorListener](JComponent.html#removeAncestorListener%28javax.swing.event.AncestorListener%29), [removeNotify](JComponent.html#removeNotify%28%29), [removeVetoableChangeListener](JComponent.html#removeVetoableChangeListener%28java.beans.VetoableChangeListener%29), [repaint](JComponent.html#repaint%28long,int,int,int,int%29), [repaint](JComponent.html#repaint%28java.awt.Rectangle%29), [requestDefaultFocus](JComponent.html#requestDefaultFocus%28%29), [requestFocus](JComponent.html#requestFocus%28%29), [requestFocus](JComponent.html#requestFocus%28boolean%29), [requestFocusInWindow](JComponent.html#requestFocusInWindow%28%29), [requestFocusInWindow](JComponent.html#requestFocusInWindow%28boolean%29), [resetKeyboardActions](JComponent.html#resetKeyboardActions%28%29), [reshape](JComponent.html#reshape%28int,int,int,int%29), [revalidate](JComponent.html#revalidate%28%29), [scrollRectToVisible](JComponent.html#scrollRectToVisible%28java.awt.Rectangle%29), [setActionMap](JComponent.html#setActionMap%28javax.swing.ActionMap%29), [setAlignmentX](JComponent.html#setAlignmentX%28float%29), [setAlignmentY](JComponent.html#setAlignmentY%28float%29), [setAutoscrolls](JComponent.html#setAutoscrolls%28boolean%29), [setBackground](JComponent.html#setBackground%28java.awt.Color%29), [setBorder](JComponent.html#setBorder%28javax.swing.border.Border%29), [setComponentPopupMenu](JComponent.html#setComponentPopupMenu%28javax.swing.JPopupMenu%29), [setDebugGraphicsOptions](JComponent.html#setDebugGraphicsOptions%28int%29), [setDefaultLocale](JComponent.html#setDefaultLocale%28java.util.Locale%29), [setDoubleBuffered](JComponent.html#setDoubleBuffered%28boolean%29), [setFocusTraversalKeys](JComponent.html#setFocusTraversalKeys%28int,java.util.Set%29), [setFont](JComponent.html#setFont%28java.awt.Font%29), [setForeground](JComponent.html#setForeground%28java.awt.Color%29), [setInheritsPopupMenu](JComponent.html#setInheritsPopupMenu%28boolean%29), [setInputMap](JComponent.html#setInputMap%28int,javax.swing.InputMap%29), [setInputVerifier](JComponent.html#setInputVerifier%28javax.swing.InputVerifier%29), [setMaximumSize](JComponent.html#setMaximumSize%28java.awt.Dimension%29), [setMinimumSize](JComponent.html#setMinimumSize%28java.awt.Dimension%29), [setNextFocusableComponent](JComponent.html#setNextFocusableComponent%28java.awt.Component%29), [setOpaque](JComponent.html#setOpaque%28boolean%29), [setPreferredSize](JComponent.html#setPreferredSize%28java.awt.Dimension%29), [setRequestFocusEnabled](JComponent.html#setRequestFocusEnabled%28boolean%29), [setToolTipText](JComponent.html#setToolTipText%28java.lang.String%29), [setTransferHandler](JComponent.html#setTransferHandler%28javax.swing.TransferHandler%29), [setUI](JComponent.html#setUI%28javax.swing.plaf.ComponentUI%29), [setVerifyInputWhenFocusTarget](JComponent.html#setVerifyInputWhenFocusTarget%28boolean%29), [setVisible](JComponent.html#setVisible%28boolean%29), [unregisterKeyboardAction](JComponent.html#unregisterKeyboardAction%28javax.swing.KeyStroke%29), [update](JComponent.html#update%28java.awt.Graphics%29)

Methods declared in class java.awt.Container

[add](../../java/awt/Container.html#add%28java.awt.Component%29), [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](../../java/awt/Container.html#addContainerListener%28java.awt.event.ContainerListener%29), [addImpl](../../java/awt/Container.html#addImpl%28java.awt.Component,java.lang.Object,int%29), [addPropertyChangeListener](../../java/awt/Container.html#addPropertyChangeListener%28java.beans.PropertyChangeListener%29), [addPropertyChangeListener](../../java/awt/Container.html#addPropertyChangeListener%28java.lang.String,java.beans.PropertyChangeListener%29), [applyComponentOrientation](../../java/awt/Container.html#applyComponentOrientation%28java.awt.ComponentOrientation%29), [areFocusTraversalKeysSet](../../java/awt/Container.html#areFocusTraversalKeysSet%28int%29), [countComponents](../../java/awt/Container.html#countComponents%28%29), [deliverEvent](../../java/awt/Container.html#deliverEvent%28java.awt.Event%29), [doLayout](../../java/awt/Container.html#doLayout%28%29), [findComponentAt](../../java/awt/Container.html#findComponentAt%28int,int%29), [findComponentAt](../../java/awt/Container.html#findComponentAt%28java.awt.Point%29), [getComponent](../../java/awt/Container.html#getComponent%28int%29), [getComponentAt](../../java/awt/Container.html#getComponentAt%28int,int%29), [getComponentAt](../../java/awt/Container.html#getComponentAt%28java.awt.Point%29), [getComponentCount](../../java/awt/Container.html#getComponentCount%28%29), [getComponents](../../java/awt/Container.html#getComponents%28%29), [getComponentZOrder](../../java/awt/Container.html#getComponentZOrder%28java.awt.Component%29), [getContainerListeners](../../java/awt/Container.html#getContainerListeners%28%29), [getFocusTraversalKeys](../../java/awt/Container.html#getFocusTraversalKeys%28int%29), [getFocusTraversalPolicy](../../java/awt/Container.html#getFocusTraversalPolicy%28%29), [getLayout](../../java/awt/Container.html#getLayout%28%29), [getMousePosition](../../java/awt/Container.html#getMousePosition%28boolean%29), [insets](../../java/awt/Container.html#insets%28%29), [invalidate](../../java/awt/Container.html#invalidate%28%29), [isAncestorOf](../../java/awt/Container.html#isAncestorOf%28java.awt.Component%29), [isFocusCycleRoot](../../java/awt/Container.html#isFocusCycleRoot%28%29), [isFocusCycleRoot](../../java/awt/Container.html#isFocusCycleRoot%28java.awt.Container%29), [isFocusTraversalPolicyProvider](../../java/awt/Container.html#isFocusTraversalPolicyProvider%28%29), [isFocusTraversalPolicySet](../../java/awt/Container.html#isFocusTraversalPolicySet%28%29), [layout](../../java/awt/Container.html#layout%28%29), [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](../../java/awt/Container.html#minimumSize%28%29), [paintComponents](../../java/awt/Container.html#paintComponents%28java.awt.Graphics%29), [preferredSize](../../java/awt/Container.html#preferredSize%28%29), [printComponents](../../java/awt/Container.html#printComponents%28java.awt.Graphics%29), [processContainerEvent](../../java/awt/Container.html#processContainerEvent%28java.awt.event.ContainerEvent%29), [processEvent](../../java/awt/Container.html#processEvent%28java.awt.AWTEvent%29), [remove](../../java/awt/Container.html#remove%28int%29), [remove](../../java/awt/Container.html#remove%28java.awt.Component%29), [removeAll](../../java/awt/Container.html#removeAll%28%29), [removeContainerListener](../../java/awt/Container.html#removeContainerListener%28java.awt.event.ContainerListener%29), [setComponentZOrder](../../java/awt/Container.html#setComponentZOrder%28java.awt.Component,int%29), [setFocusCycleRoot](../../java/awt/Container.html#setFocusCycleRoot%28boolean%29), [setFocusTraversalPolicy](../../java/awt/Container.html#setFocusTraversalPolicy%28java.awt.FocusTraversalPolicy%29), [setFocusTraversalPolicyProvider](../../java/awt/Container.html#setFocusTraversalPolicyProvider%28boolean%29), [setLayout](../../java/awt/Container.html#setLayout%28java.awt.LayoutManager%29), [transferFocusDownCycle](../../java/awt/Container.html#transferFocusDownCycle%28%29), [validate](../../java/awt/Container.html#validate%28%29), [validateTree](../../java/awt/Container.html#validateTree%28%29)

Methods declared in class java.awt.Component

[action](../../java/awt/Component.html#action%28java.awt.Event,java.lang.Object%29), [add](../../java/awt/Component.html#add%28java.awt.PopupMenu%29), [addComponentListener](../../java/awt/Component.html#addComponentListener%28java.awt.event.ComponentListener%29), [addFocusListener](../../java/awt/Component.html#addFocusListener%28java.awt.event.FocusListener%29), [addHierarchyBoundsListener](../../java/awt/Component.html#addHierarchyBoundsListener%28java.awt.event.HierarchyBoundsListener%29), [addHierarchyListener](../../java/awt/Component.html#addHierarchyListener%28java.awt.event.HierarchyListener%29), [addInputMethodListener](../../java/awt/Component.html#addInputMethodListener%28java.awt.event.InputMethodListener%29), [addKeyListener](../../java/awt/Component.html#addKeyListener%28java.awt.event.KeyListener%29), [addMouseListener](../../java/awt/Component.html#addMouseListener%28java.awt.event.MouseListener%29), [addMouseMotionListener](../../java/awt/Component.html#addMouseMotionListener%28java.awt.event.MouseMotionListener%29), [addMouseWheelListener](../../java/awt/Component.html#addMouseWheelListener%28java.awt.event.MouseWheelListener%29), [bounds](../../java/awt/Component.html#bounds%28%29), [checkImage](../../java/awt/Component.html#checkImage%28java.awt.Image,int,int,java.awt.image.ImageObserver%29), [checkImage](../../java/awt/Component.html#checkImage%28java.awt.Image,java.awt.image.ImageObserver%29), [coalesceEvents](../../java/awt/Component.html#coalesceEvents%28java.awt.AWTEvent,java.awt.AWTEvent%29), [contains](../../java/awt/Component.html#contains%28java.awt.Point%29), [createImage](../../java/awt/Component.html#createImage%28int,int%29), [createImage](../../java/awt/Component.html#createImage%28java.awt.image.ImageProducer%29), [createVolatileImage](../../java/awt/Component.html#createVolatileImage%28int,int%29), [createVolatileImage](../../java/awt/Component.html#createVolatileImage%28int,int,java.awt.ImageCapabilities%29), [disableEvents](../../java/awt/Component.html#disableEvents%28long%29), [dispatchEvent](../../java/awt/Component.html#dispatchEvent%28java.awt.AWTEvent%29), [enable](../../java/awt/Component.html#enable%28boolean%29), [enableEvents](../../java/awt/Component.html#enableEvents%28long%29), [enableInputMethods](../../java/awt/Component.html#enableInputMethods%28boolean%29), [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String,byte,byte%29), [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String,char,char%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,short,short%29), [firePropertyChange](../../java/awt/Component.html#firePropertyChange%28java.lang.String,java.lang.Object,java.lang.Object%29), [getBackground](../../java/awt/Component.html#getBackground%28%29), [getBounds](../../java/awt/Component.html#getBounds%28%29), [getColorModel](../../java/awt/Component.html#getColorModel%28%29), [getComponentListeners](../../java/awt/Component.html#getComponentListeners%28%29), [getComponentOrientation](../../java/awt/Component.html#getComponentOrientation%28%29), [getCursor](../../java/awt/Component.html#getCursor%28%29), [getDropTarget](../../java/awt/Component.html#getDropTarget%28%29), [getFocusCycleRootAncestor](../../java/awt/Component.html#getFocusCycleRootAncestor%28%29), [getFocusListeners](../../java/awt/Component.html#getFocusListeners%28%29), [getFocusTraversalKeysEnabled](../../java/awt/Component.html#getFocusTraversalKeysEnabled%28%29), [getFont](../../java/awt/Component.html#getFont%28%29), [getForeground](../../java/awt/Component.html#getForeground%28%29), [getGraphicsConfiguration](../../java/awt/Component.html#getGraphicsConfiguration%28%29), [getHierarchyBoundsListeners](../../java/awt/Component.html#getHierarchyBoundsListeners%28%29), [getHierarchyListeners](../../java/awt/Component.html#getHierarchyListeners%28%29), [getIgnoreRepaint](../../java/awt/Component.html#getIgnoreRepaint%28%29), [getInputContext](../../java/awt/Component.html#getInputContext%28%29), [getInputMethodListeners](../../java/awt/Component.html#getInputMethodListeners%28%29), [getInputMethodRequests](../../java/awt/Component.html#getInputMethodRequests%28%29), [getKeyListeners](../../java/awt/Component.html#getKeyListeners%28%29), [getLocale](../../java/awt/Component.html#getLocale%28%29), [getLocation](../../java/awt/Component.html#getLocation%28%29), [getLocationOnScreen](../../java/awt/Component.html#getLocationOnScreen%28%29), [getMouseListeners](../../java/awt/Component.html#getMouseListeners%28%29), [getMouseMotionListeners](../../java/awt/Component.html#getMouseMotionListeners%28%29), [getMousePosition](../../java/awt/Component.html#getMousePosition%28%29), [getMouseWheelListeners](../../java/awt/Component.html#getMouseWheelListeners%28%29), [getName](../../java/awt/Component.html#getName%28%29), [getParent](../../java/awt/Component.html#getParent%28%29), [getPropertyChangeListeners](../../java/awt/Component.html#getPropertyChangeListeners%28%29), [getPropertyChangeListeners](../../java/awt/Component.html#getPropertyChangeListeners%28java.lang.String%29), [getSize](../../java/awt/Component.html#getSize%28%29), [getToolkit](../../java/awt/Component.html#getToolkit%28%29), [getTreeLock](../../java/awt/Component.html#getTreeLock%28%29), [gotFocus](../../java/awt/Component.html#gotFocus%28java.awt.Event,java.lang.Object%29), [handleEvent](../../java/awt/Component.html#handleEvent%28java.awt.Event%29), [hasFocus](../../java/awt/Component.html#hasFocus%28%29), [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](../../java/awt/Component.html#isBackgroundSet%28%29), [isCursorSet](../../java/awt/Component.html#isCursorSet%28%29), [isDisplayable](../../java/awt/Component.html#isDisplayable%28%29), [isEnabled](../../java/awt/Component.html#isEnabled%28%29), [isFocusable](../../java/awt/Component.html#isFocusable%28%29), [isFocusOwner](../../java/awt/Component.html#isFocusOwner%28%29), [isFocusTraversable](../../java/awt/Component.html#isFocusTraversable%28%29), [isFontSet](../../java/awt/Component.html#isFontSet%28%29), [isForegroundSet](../../java/awt/Component.html#isForegroundSet%28%29), [isLightweight](../../java/awt/Component.html#isLightweight%28%29), [isMaximumSizeSet](../../java/awt/Component.html#isMaximumSizeSet%28%29), [isMinimumSizeSet](../../java/awt/Component.html#isMinimumSizeSet%28%29), [isPreferredSizeSet](../../java/awt/Component.html#isPreferredSizeSet%28%29), [isShowing](../../java/awt/Component.html#isShowing%28%29), [isValid](../../java/awt/Component.html#isValid%28%29), [isVisible](../../java/awt/Component.html#isVisible%28%29), [keyDown](../../java/awt/Component.html#keyDown%28java.awt.Event,int%29), [keyUp](../../java/awt/Component.html#keyUp%28java.awt.Event,int%29), [list](../../java/awt/Component.html#list%28%29), [list](../../java/awt/Component.html#list%28java.io.PrintStream%29), [list](../../java/awt/Component.html#list%28java.io.PrintWriter%29), [location](../../java/awt/Component.html#location%28%29), [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](../../java/awt/Component.html#nextFocus%28%29), [paintAll](../../java/awt/Component.html#paintAll%28java.awt.Graphics%29), [postEvent](../../java/awt/Component.html#postEvent%28java.awt.Event%29), [prepareImage](../../java/awt/Component.html#prepareImage%28java.awt.Image,int,int,java.awt.image.ImageObserver%29), [prepareImage](../../java/awt/Component.html#prepareImage%28java.awt.Image,java.awt.image.ImageObserver%29), [processComponentEvent](../../java/awt/Component.html#processComponentEvent%28java.awt.event.ComponentEvent%29), [processFocusEvent](../../java/awt/Component.html#processFocusEvent%28java.awt.event.FocusEvent%29), [processHierarchyBoundsEvent](../../java/awt/Component.html#processHierarchyBoundsEvent%28java.awt.event.HierarchyEvent%29), [processHierarchyEvent](../../java/awt/Component.html#processHierarchyEvent%28java.awt.event.HierarchyEvent%29), [processInputMethodEvent](../../java/awt/Component.html#processInputMethodEvent%28java.awt.event.InputMethodEvent%29), [processMouseWheelEvent](../../java/awt/Component.html#processMouseWheelEvent%28java.awt.event.MouseWheelEvent%29), [remove](../../java/awt/Component.html#remove%28java.awt.MenuComponent%29), [removeComponentListener](../../java/awt/Component.html#removeComponentListener%28java.awt.event.ComponentListener%29), [removeFocusListener](../../java/awt/Component.html#removeFocusListener%28java.awt.event.FocusListener%29), [removeHierarchyBoundsListener](../../java/awt/Component.html#removeHierarchyBoundsListener%28java.awt.event.HierarchyBoundsListener%29), [removeHierarchyListener](../../java/awt/Component.html#removeHierarchyListener%28java.awt.event.HierarchyListener%29), [removeInputMethodListener](../../java/awt/Component.html#removeInputMethodListener%28java.awt.event.InputMethodListener%29), [removeKeyListener](../../java/awt/Component.html#removeKeyListener%28java.awt.event.KeyListener%29), [removeMouseListener](../../java/awt/Component.html#removeMouseListener%28java.awt.event.MouseListener%29), [removeMouseMotionListener](../../java/awt/Component.html#removeMouseMotionListener%28java.awt.event.MouseMotionListener%29), [removeMouseWheelListener](../../java/awt/Component.html#removeMouseWheelListener%28java.awt.event.MouseWheelListener%29), [removePropertyChangeListener](../../java/awt/Component.html#removePropertyChangeListener%28java.beans.PropertyChangeListener%29), [removePropertyChangeListener](../../java/awt/Component.html#removePropertyChangeListener%28java.lang.String,java.beans.PropertyChangeListener%29), [repaint](../../java/awt/Component.html#repaint%28%29), [repaint](../../java/awt/Component.html#repaint%28int,int,int,int%29), [repaint](../../java/awt/Component.html#repaint%28long%29), [requestFocus](../../java/awt/Component.html#requestFocus%28boolean,java.awt.event.FocusEvent.Cause%29), [requestFocus](../../java/awt/Component.html#requestFocus%28java.awt.event.FocusEvent.Cause%29), [requestFocusInWindow](../../java/awt/Component.html#requestFocusInWindow%28java.awt.event.FocusEvent.Cause%29), [resize](../../java/awt/Component.html#resize%28int,int%29), [resize](../../java/awt/Component.html#resize%28java.awt.Dimension%29), [setBounds](../../java/awt/Component.html#setBounds%28int,int,int,int%29), [setBounds](../../java/awt/Component.html#setBounds%28java.awt.Rectangle%29), [setComponentOrientation](../../java/awt/Component.html#setComponentOrientation%28java.awt.ComponentOrientation%29), [setCursor](../../java/awt/Component.html#setCursor%28java.awt.Cursor%29), [setDropTarget](../../java/awt/Component.html#setDropTarget%28java.awt.dnd.DropTarget%29), [setFocusable](../../java/awt/Component.html#setFocusable%28boolean%29), [setFocusTraversalKeysEnabled](../../java/awt/Component.html#setFocusTraversalKeysEnabled%28boolean%29), [setIgnoreRepaint](../../java/awt/Component.html#setIgnoreRepaint%28boolean%29), [setLocale](../../java/awt/Component.html#setLocale%28java.util.Locale%29), [setLocation](../../java/awt/Component.html#setLocation%28int,int%29), [setLocation](../../java/awt/Component.html#setLocation%28java.awt.Point%29), [setMixingCutoutShape](../../java/awt/Component.html#setMixingCutoutShape%28java.awt.Shape%29), [setName](../../java/awt/Component.html#setName%28java.lang.String%29), [setSize](../../java/awt/Component.html#setSize%28int,int%29), [setSize](../../java/awt/Component.html#setSize%28java.awt.Dimension%29), [show](../../java/awt/Component.html#show%28%29), [show](../../java/awt/Component.html#show%28boolean%29), [size](../../java/awt/Component.html#size%28%29), [toString](../../java/awt/Component.html#toString%28%29), [transferFocus](../../java/awt/Component.html#transferFocus%28%29), [transferFocusBackward](../../java/awt/Component.html#transferFocusBackward%28%29), [transferFocusUpCycle](../../java/awt/Component.html#transferFocusUpCycle%28%29)

• Field Details

  • model

  The model that represents the scrollbar's minimum, maximum, extent (aka "visibleAmount") and current value.
  See Also:
  * setModel(javax.swing.BoundedRangeModel)

  • orientation

  protected int orientation
  Orientation of this scrollBar.
  See Also:
  * setOrientation(int)

  • unitIncrement

  protected int unitIncrement
  Stores the amount by which the value of the scrollbar is changed upon a unit up/down request.
  See Also:
  * setUnitIncrement(int)

  • blockIncrement

  protected int blockIncrement
  Stores the amount by which the value of the scrollbar is changed upon a block (usually "page") up/down request.
  See Also:
  * setBlockIncrement(int)

• Constructor Details

  • JScrollBar

  public JScrollBar(int orientation, int value, int extent, int min, int max)
  Creates a scrollbar with the specified orientation, value, extent, minimum, and maximum. The "extent" is the size of the viewable area. It is also known as the "visible amount".
  Note: Use setBlockIncrement to set the block increment to a size slightly smaller than the view's extent. That way, when the user jumps the knob to an adjacent position, one or two lines of the original contents remain in view.
  Parameters:
  orientation - an orientation of the JScrollBar
value - an int giving the current value
  extent - an int giving the amount by which the value can "jump"
  min - an int giving the minimum value
  max - an int giving the maximum value
  Throws:
  [IllegalArgumentException](../../../java.base/java/lang/IllegalArgumentException.html "class in java.lang") - if orientation is not one of VERTICAL, HORIZONTAL
  See Also:
  * setOrientation(int)
  * setValue(int)
  * setVisibleAmount(int)
  * setMinimum(int)
  * setMaximum(int)

  • JScrollBar

  public JScrollBar(int orientation)
  Creates a scrollbar with the specified orientation and the following initial values:
  minimum = 0
  maximum = 100
  value = 0
  extent = 10

  Parameters:
  orientation - an orientation of the JScrollBar

  • JScrollBar

  public JScrollBar()
  Creates a vertical scrollbar with the following initial values:
  minimum = 0
  maximum = 100
  value = 0
  extent = 10

• Method Details

  • setUI

  Sets the L&F object that renders this component.
  Parameters:
  ui - the ScrollBarUI L&F object
  Since:
  1.4
  See Also:
  * UIDefaults.getUI(javax.swing.JComponent)

  • getUI

  Returns the delegate that implements the look and feel for this component.
  Overrides:
  [getUI](JComponent.html#getUI%28%29) in class [JComponent](JComponent.html "class in javax.swing")
  Returns:
  the scroll bar's current UI.
  See Also:
  * JComponent.setUI(javax.swing.plaf.ComponentUI)

  • updateUI

  public void updateUI()
  Overrides JComponent.updateUI.
  Overrides:
  [updateUI](JComponent.html#updateUI%28%29) in class [JComponent](JComponent.html "class in javax.swing")
  See Also:
  * JComponent.updateUI()

  • getUIClassID

  Returns the name of the LookAndFeel class for this component.
  Overrides:
  [getUIClassID](JComponent.html#getUIClassID%28%29) in class [JComponent](JComponent.html "class in javax.swing")
  Returns:
  the string "ScrollBarUI"
  See Also:
  * JComponent.getUIClassID()
  * UIDefaults.getUI(javax.swing.JComponent)

  • getOrientation

  public int getOrientation()
  Returns the component's orientation (horizontal or vertical).
  Specified by:
  [getOrientation](../../java/awt/Adjustable.html#getOrientation%28%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Returns:
  VERTICAL or HORIZONTAL
  See Also:
  * setOrientation(int)
  * Adjustable.getOrientation()

  • setOrientation

  Set the scrollbar's orientation to either VERTICAL or HORIZONTAL.
  Parameters:
  orientation - an orientation of the JScrollBar
  Throws:
  [IllegalArgumentException](../../../java.base/java/lang/IllegalArgumentException.html "class in java.lang") - if orientation is not one of VERTICAL, HORIZONTAL
  See Also:
  * getOrientation()

  • getModel

  Returns data model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.
  Returns:
  the data model
  See Also:
  * setModel(javax.swing.BoundedRangeModel)

  • setModel

  Sets the model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.
  Parameters:
  newModel - a new model
  See Also:
  * getModel()

  • getUnitIncrement

  public int getUnitIncrement(int direction)
  Returns the amount to change the scrollbar's value by, given a unit up/down request. A ScrollBarUI implementation typically calls this method when the user clicks on a scrollbar up/down arrow and uses the result to update the scrollbar's value. Subclasses may override this method to compute a value, e.g. the change required to scroll one (variable height) line of text or one row in a table.
  The JScrollPane component creates scrollbars (by default) that override this method and delegate to the viewports Scrollable view, if it has one. The Scrollable interface provides a more specialized version of this method.
  Some look and feel implementations that provide custom scrolling behavior ignore this property.
  Parameters:
  direction - is -1 or 1 for up/down respectively
  Returns:
  the value of the unitIncrement property
  See Also:
  * setUnitIncrement(int)
  * setValue(int)
  * Scrollable.getScrollableUnitIncrement(java.awt.Rectangle, int, int)

  • setUnitIncrement

  Sets the unitIncrement property.
  Note, that if the argument is equal to the value of Integer.MIN_VALUE, then most look and feel implementations will not provide scrolling to the right/down.
  Some look and feel implementations that provide custom scrolling behavior ignore this property.
  Specified by:
  [setUnitIncrement](../../java/awt/Adjustable.html#setUnitIncrement%28int%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Parameters:
  unitIncrement - the unit increment
  See Also:
  * getUnitIncrement(int)

  • getBlockIncrement

  public int getBlockIncrement(int direction)
  Returns the amount to change the scrollbar's value by, given a block (usually "page") up/down request. A ScrollBarUI implementation typically calls this method when the user clicks outside the scrollbar "knob" to scroll up or down by a large amount. Subclasses may override this method to compute a value, e.g. the change required to scroll one paragraph in a text document.
  The JScrollPane component creates scrollbars (by default) that override this method and delegate to the viewports Scrollable view, if it has one. The Scrollable interface provides a more specialized version of this method.
  Some look and feel implementations that provide custom scrolling behavior ignore this property.
  Parameters:
  direction - is -1 or 1 for up/down respectively
  Returns:
  the value of the blockIncrement property
  See Also:
  * setBlockIncrement(int)
  * setValue(int)
  * Scrollable.getScrollableBlockIncrement(java.awt.Rectangle, int, int)

  • setBlockIncrement

  Sets the blockIncrement property.
  Note, that if the argument is equal to the value of Integer.MIN_VALUE, then most look and feel implementations will not provide scrolling to the right/down.
  Some look and feel implementations that provide custom scrolling behavior ignore this property.
  Specified by:
  [setBlockIncrement](../../java/awt/Adjustable.html#setBlockIncrement%28int%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Parameters:
  blockIncrement - the block increment
  See Also:
  * getBlockIncrement()

  • getUnitIncrement

  public int getUnitIncrement()
  For backwards compatibility with java.awt.Scrollbar.
  Specified by:
  [getUnitIncrement](../../java/awt/Adjustable.html#getUnitIncrement%28%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Returns:
  the unit value increment for the adjustable object
  See Also:
  * Adjustable.getUnitIncrement()
  * getUnitIncrement(int)

  • getBlockIncrement

  public int getBlockIncrement()
  For backwards compatibility with java.awt.Scrollbar.
  Specified by:
  [getBlockIncrement](../../java/awt/Adjustable.html#getBlockIncrement%28%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Returns:
  the block value increment for the adjustable object
  See Also:
  * Adjustable.getBlockIncrement()
  * getBlockIncrement(int)

  • getValue

  public int getValue()
  Returns the scrollbar's value.
  Specified by:
  [getValue](../../java/awt/Adjustable.html#getValue%28%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Returns:
  the model's value property
  See Also:
  * setValue(int)

  • setValue

  Sets the scrollbar's value. This method just forwards the value to the model.
  Specified by:
  [setValue](../../java/awt/Adjustable.html#setValue%28int%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Parameters:
  value - the current value, between minimum and maximum - visibleAmount
  See Also:
  * getValue()
  * BoundedRangeModel.setValue(int)

  • getVisibleAmount

  public int getVisibleAmount()
  Returns the scrollbar's extent, aka its "visibleAmount". In many scrollbar look and feel implementations the size of the scrollbar "knob" or "thumb" is proportional to the extent.
  Specified by:
  [getVisibleAmount](../../java/awt/Adjustable.html#getVisibleAmount%28%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Returns:
  the value of the model's extent property
  See Also:
  * setVisibleAmount(int)

  • setVisibleAmount

  Set the model's extent property.
  Specified by:
  [setVisibleAmount](../../java/awt/Adjustable.html#setVisibleAmount%28int%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Parameters:
  extent - the length of the indicator
  See Also:
  * getVisibleAmount()
  * BoundedRangeModel.setExtent(int)

  • getMinimum

  public int getMinimum()
  Returns the minimum value supported by the scrollbar (usually zero).
  Specified by:
  [getMinimum](../../java/awt/Adjustable.html#getMinimum%28%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Returns:
  the value of the model's minimum property
  See Also:
  * setMinimum(int)

  • setMinimum

  Sets the model's minimum property.
  Specified by:
  [setMinimum](../../java/awt/Adjustable.html#setMinimum%28int%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Parameters:
  minimum - the minimum value
  See Also:
  * getMinimum()
  * BoundedRangeModel.setMinimum(int)

  • getMaximum

  public int getMaximum()
  The maximum value of the scrollbar is maximum - extent.
  Specified by:
  [getMaximum](../../java/awt/Adjustable.html#getMaximum%28%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Returns:
  the value of the model's maximum property
  See Also:
  * setMaximum(int)

  • setMaximum

  Sets the model's maximum property. Note that the scrollbar's value can only be set to maximum - extent.
  Specified by:
  [setMaximum](../../java/awt/Adjustable.html#setMaximum%28int%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Parameters:
  maximum - the maximum value
  See Also:
  * getMaximum()
  * BoundedRangeModel.setMaximum(int)

  • getValueIsAdjusting

  public boolean getValueIsAdjusting()
  True if the scrollbar knob is being dragged.
  Returns:
  the value of the model's valueIsAdjusting property
  See Also:
  * setValueIsAdjusting(boolean)

  • setValueIsAdjusting

  @BeanProperty(bound=false,expert=true,description="True if the scrollbar thumb is being dragged.")public void setValueIsAdjusting(boolean b)
  Sets the model's valueIsAdjusting property. Scrollbar look and feel implementations should set this property to true when a knob drag begins, and to false when the drag ends. The scrollbar model will not generate ChangeEvents while valueIsAdjusting is true.
  Parameters:
  b - true if the upcoming changes to the value property are part of a series
  See Also:
  * getValueIsAdjusting()
  * BoundedRangeModel.setValueIsAdjusting(boolean)

  • setValues

  public void setValues(int newValue, int newExtent, int newMin, int newMax)
  Sets the four BoundedRangeModel properties after forcing the arguments to obey the usual constraints:
  minimum ≤ value ≤ value+extent ≤ maximum

  Parameters:
  newValue - an int giving the current value
  newExtent - an int giving the amount by which the value can "jump"
  newMin - an int giving the minimum value
  newMax - an int giving the maximum value
  See Also:
  * BoundedRangeModel.setRangeProperties(int, int, int, int, boolean)
  * setValue(int)
  * setVisibleAmount(int)
  * setMinimum(int)
  * setMaximum(int)

  • addAdjustmentListener

  Adds an AdjustmentListener. Adjustment listeners are notified each time the scrollbar's model changes. Adjustment events are provided for backwards compatibility with java.awt.Scrollbar.
  Note that the AdjustmentEvents type property will always have a placeholder value of AdjustmentEvent.TRACK because all changes to a BoundedRangeModels value are considered equivalent. To change the value of a BoundedRangeModel one just sets its value property, i.e. model.setValue(123). No information about the origin of the change, e.g. it's a block decrement, is provided. We don't try to fabricate the origin of the change here.
  Specified by:
  [addAdjustmentListener](../../java/awt/Adjustable.html#addAdjustmentListener%28java.awt.event.AdjustmentListener%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Parameters:
  l - the AdjustmentLister to add
  See Also:
  * removeAdjustmentListener(java.awt.event.AdjustmentListener)
  * BoundedRangeModel.addChangeListener(javax.swing.event.ChangeListener)

  • removeAdjustmentListener

  Removes an AdjustmentEvent listener.
  Specified by:
  [removeAdjustmentListener](../../java/awt/Adjustable.html#removeAdjustmentListener%28java.awt.event.AdjustmentListener%29) in interface [Adjustable](../../java/awt/Adjustable.html "interface in java.awt")
  Parameters:
  l - the AdjustmentLister to remove
  See Also:
  * addAdjustmentListener(java.awt.event.AdjustmentListener)

  • getAdjustmentListeners

  Returns an array of all the AdjustmentListeners added to this JScrollBar with addAdjustmentListener().
  Returns:
  all of the AdjustmentListeners added or an empty array if no listeners have been added
  Since:
  1.4

  • fireAdjustmentValueChanged

  protected void fireAdjustmentValueChanged(int id, int type, int value)
  Notify listeners that the scrollbar's model has changed.
  Parameters:
  id - an integer indicating the type of event.
  type - an integer indicating the adjustment type.
  value - the current value of the adjustment
  See Also:
  * addAdjustmentListener(java.awt.event.AdjustmentListener)
  * EventListenerList

  • getMinimumSize

  The scrollbar is flexible along it's scrolling axis and rigid along the other axis.
  Overrides:
  [getMinimumSize](JComponent.html#getMinimumSize%28%29) in class [JComponent](JComponent.html "class in javax.swing")
  Returns:
  the value of the minimumSize property
  See Also:
  * JComponent.setMinimumSize(java.awt.Dimension)
  * ComponentUI

  • getMaximumSize

  The scrollbar is flexible along it's scrolling axis and rigid along the other axis.
  Overrides:
  [getMaximumSize](JComponent.html#getMaximumSize%28%29) in class [JComponent](JComponent.html "class in javax.swing")
  Returns:
  the value of the maximumSize property
  See Also:
  * JComponent.setMaximumSize(java.awt.Dimension)
  * ComponentUI

  • setEnabled

  public void setEnabled(boolean x)
  Enables the component so that the knob position can be changed. When the disabled, the knob position cannot be changed.
  Overrides:
  [setEnabled](JComponent.html#setEnabled%28boolean%29) in class [JComponent](JComponent.html "class in javax.swing")
  Parameters:
  x - a boolean value, where true enables the component and false disables it
  See Also:
  * Component.isEnabled()
  * Component.isLightweight()

  • paramString

  protected String paramString()
  Returns a string representation of this JScrollBar. 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](JComponent.html#paramString%28%29) in class [JComponent](JComponent.html "class in javax.swing")
  Returns:
  a string representation of this JScrollBar.

  • getAccessibleContext

  Gets the AccessibleContext associated with this JScrollBar. For JScrollBar, the AccessibleContext takes the form of an AccessibleJScrollBar. A new AccessibleJScrollBar instance is created if necessary.
  Specified by:
  [getAccessibleContext](../accessibility/Accessible.html#getAccessibleContext%28%29) in interface [Accessible](../accessibility/Accessible.html "interface in javax.accessibility")
  Overrides:
  [getAccessibleContext](../../java/awt/Component.html#getAccessibleContext%28%29) in class [Component](../../java/awt/Component.html "class in java.awt")
  Returns:
  an AccessibleJScrollBar that serves as the AccessibleContext of this JScrollBar