javax.swing
Class JScrollPane.ScrollBar

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--javax.swing.JScrollBar
                          |
                          +--javax.swing.JScrollPane.ScrollBar
All Implemented Interfaces:
Accessible, Adjustable, ImageObserver, MenuContainer, Serializable, UIResource
Enclosing class:
JScrollPane
protected class JScrollPane.ScrollBar
extends JScrollBar
implements UIResource

By default JScrollPane creates scrollbars that are instances of this class. Scrollbar overrides the getUnitIncrement and getBlockIncrement methods so that, if the viewport's view is a Scrollable, the view is asked to compute these values. Unless the unit/block increment have been explicitly set.

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.

See Also:
Scrollable, JScrollPane.createVerticalScrollBar(), JScrollPane.createHorizontalScrollBar()

 

Nested Class Summary

 
Nested classes inherited from class javax.swing.JScrollBar
JScrollBar.AccessibleJScrollBar
 
Nested classes inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
 
Nested classes inherited from class java.awt.Container
Container.AccessibleAWTContainer
 
Nested classes inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy
 

 

Field Summary

 
Fields inherited from class javax.swing.JScrollBar
blockIncrement, model, orientation, unitIncrement
 
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.Adjustable
HORIZONTAL, NO_ORIENTATION, VERTICAL
 
Fields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
 

 

Constructor Summary

JScrollPane.ScrollBar(int orientation)
    Creates a scrollbar with the specified orientation, where the options are: JScrollPane.VERTICAL JScrollPane.HORIZONTAL
 

 

Method Summary

 int getBlockIncrement(int direction)
    Computes the block increment for scrolling if the viewport's view is a Scrollable object.
 int getUnitIncrement(int direction)
    Computes the unit increment for scrolling if the viewport's view is a Scrollable object.