Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class JScrollBar - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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javax.swing
Class JScrollBar

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--javax.swing.JScrollBar

Direct Known Subclasses:: JScrollPane.ScrollBar

public class JScrollBar
extends JComponent
implements Adjustable, Accessible

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 postion 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: 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. A future release of Swing will provide support for long term persistence.

See Also:: JScrollPane, Serialized Form

Inner Class Summary

protected class JScrollBar.AccessibleJScrollBar
          The class used to obtain the accessible role for this object.

Inner classes inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Field Summary

protected int blockIncrement


protected BoundedRangeModel model
          The model that represents the scrollbar's minimum, maximum, extent (aka "visibleAmount") and current value.

protected int orientation


protected int 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, VERTICAL

Constructor Summary

JScrollBar()
          Creates a vertical scrollbar with the following initial values:

JScrollBar(int orientation)
          Creates a scrollbar with the specified orientation and the following initial values:

JScrollBar(int orientation, int value, int extent, int min, int max)
          Creates a scrollbar with the specified orientation, value, extent, mimimum, and maximum.

Method Summary

void addAdjustmentListener(AdjustmentListener l)
          Adds an AdjustmentListener.

protected void fireAdjustmentValueChanged(int id, int type, int value)


AccessibleContext getAccessibleContext()
          Get the AccessibleContext associated with this JComponent

int getBlockIncrement()
          For backwards compatibility with java.awt.Scrollbar.

int getBlockIncrement(int direction)
          Returns the amount to change the scrollbar's value by, given a block (usually "page") up/down request.

int getMaximum()
          The maximum value of the scrollbar is maximum - extent.

Dimension getMaximumSize()
          The scrollbar is flexible along it's scrolling axis and rigid along the other axis.

int getMinimum()
          Returns the minimum value supported by the scrollbar (usually zero).

Dimension getMinimumSize()
          The scrollbar is flexible along it's scrolling axis and rigid along the other axis.

BoundedRangeModel getModel()
          Returns data model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.

int getOrientation()
          Returns the component's orientation (horizontal or vertical).

ScrollBarUI getUI()
          Returns the delegate that implements the look and feel for this component.

String getUIClassID()
          Returns the name of the LookAndFeel class for this component.

int getUnitIncrement()
          For backwards compatibility with java.awt.Scrollbar.

int getUnitIncrement(int direction)
          Returns the amount to change the scrollbar's value by, given a unit up/down request.

int getValue()
          Returns the scrollbar's value.

boolean getValueIsAdjusting()
          True if the scrollbar knob is being dragged.

int getVisibleAmount()
          Returns the scrollbar's extent, aka its "visibleAmount".

protected String paramString()
          Returns a string representation of this JScrollBar.

void removeAdjustmentListener(AdjustmentListener l)
          Removes an AdjustmentEvent listener.

void setBlockIncrement(int blockIncrement)
          Sets the blockIncrement property.

void setEnabled(boolean x)
          Enables the component so that the knob position can be changed.

void setMaximum(int maximum)
          Sets the model's maximum property.

void setMinimum(int minimum)
          Sets the model's minimum property.

void setModel(BoundedRangeModel newModel)
          Sets the model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.

void setOrientation(int orientation)
          Set the scrollbar's orientation to either VERTICAL or HORIZONTAL.

void setUnitIncrement(int unitIncrement)
          Sets the unitIncrement property.

void setValue(int value)
          Sets the scrollbar's value.

void setValueIsAdjusting(boolean b)
          Sets the model's valueIsAdjusting property.

void setValues(int newValue, int newExtent, int newMin, int newMax)
          Sets the four BoundedRangeModel properties after forcing the arguments to obey the usual constraints:

void setVisibleAmount(int extent)
          Set the model's extent property.

void updateUI()
          Overrides JComponent.updateUI.

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getAlignmentX, getAlignmentY, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getGraphics, getHeight, getInsets, getInsets, getLocation, getNextFocusableComponent, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getVisibleRect, getWidth, getX, getY, grabFocus, hasFocus, isDoubleBuffered, isFocusCycleRoot, isFocusTraversable, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, processComponentKeyEvent, processFocusEvent, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDoubleBuffered, setFont, setForeground, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setUI, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getLayout, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setCursor, setLayout, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hide, imageUpdate, inside, isDisplayable, isEnabled, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processInputMethodEvent, processMouseEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setDropTarget, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

model

protected BoundedRangeModel 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

See Also:: setOrientation(int)

unitIncrement

protected int unitIncrement

See Also:: setUnitIncrement(int)

blockIncrement

protected int blockIncrement

See Also:: setBlockIncrement(int)

Constructor Detail

JScrollBar

public JScrollBar(int orientation,
                  int value,
                  int extent,
                  int min,
                  int max)

Creates a scrollbar with the specified orientation, value, extent, mimimum, 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.

Throws:: IllegalArgumentException - 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

JScrollBar

public JScrollBar()

Creates a vertical scrollbar with the following initial values:

 minimum = 0 
 maximum = 100 
 value = 0
 extent = 10

Method Detail

getUI

public ScrollBarUI getUI()

Returns the delegate that implements the look and feel for this component.

See Also:: JComponent.setUI(javax.swing.plaf.ComponentUI)

updateUI

public void updateUI()

Overrides JComponent.updateUI.

Overrides:: updateUI in class JComponent

See Also:: JComponent.updateUI()

getUIClassID

public String getUIClassID()

Returns the name of the LookAndFeel class for this component.

Overrides:: getUIClassID in class JComponent

Returns:: "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 in interface Adjustable

Returns:: VERTICAL or HORIZONTAL
See Also:: setOrientation(int), Adjustable.getOrientation()

setOrientation

public void setOrientation(int orientation)

Set the scrollbar's orientation to either VERTICAL or HORIZONTAL.

Throws:: IllegalArgumentException - if orientation is not one of VERTICAL, HORIZONTAL
See Also:: getOrientation()

getModel

public BoundedRangeModel getModel()

Returns data model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.

See Also:: setModel(javax.swing.BoundedRangeModel)

setModel

public void setModel(BoundedRangeModel newModel)

Sets the model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.

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 my override this method to compute a value, e.g. the change required to scroll up or down one (variable height) line 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.

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

public void setUnitIncrement(int unitIncrement)

Sets the unitIncrement property.

Specified by:: setUnitIncrement in interface Adjustable

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 above or below the scrollbar "knob" to change the value up or down by large amount. Subclasses my override this method to compute a value, e.g. the change required to scroll up or down one paragraph in a text document.

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

public void setBlockIncrement(int blockIncrement)

Sets the blockIncrement property.

Specified by:: setBlockIncrement in interface Adjustable

See Also:: getBlockIncrement()

getUnitIncrement

public int getUnitIncrement()

For backwards compatibility with java.awt.Scrollbar.

Specified by:: getUnitIncrement in interface Adjustable

See Also:: Adjustable.getUnitIncrement(), getUnitIncrement(int)

getBlockIncrement

public int getBlockIncrement()

For backwards compatibility with java.awt.Scrollbar.

Specified by:: getBlockIncrement in interface Adjustable

See Also:: Adjustable.getBlockIncrement(), getBlockIncrement(int)

getValue

public int getValue()

Returns the scrollbar's value.

Specified by:: getValue in interface Adjustable

Returns:: the model's value property
See Also:: setValue(int)

setValue

public void setValue(int value)

Sets the scrollbar's value. This method just forwards the value to the model.

Specified by:: setValue in interface Adjustable

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 in interface Adjustable

Returns:: the value of the model's extent property
See Also:: setVisibleAmount(int)

setVisibleAmount

public void setVisibleAmount(int extent)

Set the model's extent property.

Specified by:: setVisibleAmount in interface Adjustable

See Also:: getVisibleAmount(), BoundedRangeModel.setExtent(int)

getMinimum

public int getMinimum()

Returns the minimum value supported by the scrollbar (usually zero).

Specified by:: getMinimum in interface Adjustable

Returns:: the value of the model's minimum property
See Also:: setMinimum(int)

setMinimum

public void setMinimum(int minimum)

Sets the model's minimum property.

Specified by:: setMinimum in interface Adjustable

See Also:: getMinimum(), BoundedRangeModel.setMinimum(int)

getMaximum

public int getMaximum()

The maximum value of the scrollbar is maximum - extent.

Specified by:: getMaximum in interface Adjustable

Returns:: the value of the model's maximum property
See Also:: setMaximum(int)

setMaximum

public void setMaximum(int maximum)

Sets the model's maximum property. Note that the scrollbar's value can only be set to maximum - extent.

Specified by:: setMaximum in interface Adjustable

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

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.

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

See Also:: BoundedRangeModel.setRangeProperties(int, int, int, int, boolean), setValue(int), setVisibleAmount(int), setMinimum(int), setMaximum(int)

addAdjustmentListener

public void addAdjustmentListener(AdjustmentListener l)

Adds an AdjustmentListener. Adjustment listeners are notified each time the scrollbar's model changes. Adjustment events are provided for backwards compatability 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 fabricate the origin of the change here.

Specified by:: addAdjustmentListener in interface Adjustable

Parameters:: l - the AdjustmentLister to add
See Also:: removeAdjustmentListener(java.awt.event.AdjustmentListener), BoundedRangeModel.addChangeListener(javax.swing.event.ChangeListener)

removeAdjustmentListener

public void removeAdjustmentListener(AdjustmentListener l)

Removes an AdjustmentEvent listener.

Specified by:: removeAdjustmentListener in interface Adjustable

Parameters:: l - the AdjustmentLister to remove
See Also:: addAdjustmentListener(java.awt.event.AdjustmentListener)

fireAdjustmentValueChanged

protected void fireAdjustmentValueChanged(int id,
                                          int type,
                                          int value)

getMinimumSize

public Dimension getMinimumSize()

The scrollbar is flexible along it's scrolling axis and rigid along the other axis.

Overrides:: getMinimumSize in class JComponent

Tags copied from class: JComponent

Returns:: the value of the minimumSize property.
See Also:: JComponent.setMinimumSize(java.awt.Dimension)

getMaximumSize

public Dimension getMaximumSize()

The scrollbar is flexible along it's scrolling axis and rigid along the other axis.

Overrides:: getMaximumSize in class JComponent

Tags copied from class: JComponent

Returns:: the value of the maximumSize property.
See Also:: JComponent.setMaximumSize(java.awt.Dimension)

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 in class JComponent

Parameters:: b - a boolean value, where true enables the component and false disables it

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 in class JComponent

Returns:: a string representation of this JScrollBar.

getAccessibleContext

public AccessibleContext getAccessibleContext()

Get the AccessibleContext associated with this JComponent

Specified by:: getAccessibleContext in interface Accessible
Overrides:: getAccessibleContext in class JComponent

Returns:: the AccessibleContext of this JComponent

Overview

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SUMMARY: INNER | FIELD | CONSTR | METHOD

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Submit a bug or feature
Java, Java 2D, and JDBC are a trademarks or registered trademarks of Sun Microsystems, Inc. in the US and other countries.
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Inner Class Summary
`protected class`	`JScrollBar.AccessibleJScrollBar` The class used to obtain the accessible role for this object.

Field Summary
`protected int`	`blockIncrement`
`protected BoundedRangeModel`	`model` The model that represents the scrollbar's minimum, maximum, extent (aka "visibleAmount") and current value.
`protected int`	`orientation`
`protected int`	`unitIncrement`

Constructor Summary
`JScrollBar()` Creates a vertical scrollbar with the following initial values:
`JScrollBar(int orientation)` Creates a scrollbar with the specified orientation and the following initial values:
`JScrollBar(int orientation, int value, int extent, int min, int max)` Creates a scrollbar with the specified orientation, value, extent, mimimum, and maximum.

Method Summary
`void`	`addAdjustmentListener(AdjustmentListener l)` Adds an AdjustmentListener.
`protected void`	`fireAdjustmentValueChanged(int id, int type, int value)`
`AccessibleContext`	`getAccessibleContext()` Get the AccessibleContext associated with this JComponent
`int`	`getBlockIncrement()` For backwards compatibility with java.awt.Scrollbar.
`int`	`getBlockIncrement(int direction)` Returns the amount to change the scrollbar's value by, given a block (usually "page") up/down request.
`int`	`getMaximum()` The maximum value of the scrollbar is maximum - extent.
`Dimension`	`getMaximumSize()` The scrollbar is flexible along it's scrolling axis and rigid along the other axis.
`int`	`getMinimum()` Returns the minimum value supported by the scrollbar (usually zero).
`Dimension`	`getMinimumSize()` The scrollbar is flexible along it's scrolling axis and rigid along the other axis.
`BoundedRangeModel`	`getModel()` Returns data model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.
`int`	`getOrientation()` Returns the component's orientation (horizontal or vertical).
`ScrollBarUI`	`getUI()` Returns the delegate that implements the look and feel for this component.
`String`	`getUIClassID()` Returns the name of the LookAndFeel class for this component.
`int`	`getUnitIncrement()` For backwards compatibility with java.awt.Scrollbar.
`int`	`getUnitIncrement(int direction)` Returns the amount to change the scrollbar's value by, given a unit up/down request.
`int`	`getValue()` Returns the scrollbar's value.
`boolean`	`getValueIsAdjusting()` True if the scrollbar knob is being dragged.
`int`	`getVisibleAmount()` Returns the scrollbar's extent, aka its "visibleAmount".
`protected String`	`paramString()` Returns a string representation of this JScrollBar.
`void`	`removeAdjustmentListener(AdjustmentListener l)` Removes an AdjustmentEvent listener.
`void`	`setBlockIncrement(int blockIncrement)` Sets the blockIncrement property.
`void`	`setEnabled(boolean x)` Enables the component so that the knob position can be changed.
`void`	`setMaximum(int maximum)` Sets the model's maximum property.
`void`	`setMinimum(int minimum)` Sets the model's minimum property.
`void`	`setModel(BoundedRangeModel newModel)` Sets the model that handles the scrollbar's four fundamental properties: minimum, maximum, value, extent.
`void`	`setOrientation(int orientation)` Set the scrollbar's orientation to either VERTICAL or HORIZONTAL.
`void`	`setUnitIncrement(int unitIncrement)` Sets the unitIncrement property.
`void`	`setValue(int value)` Sets the scrollbar's value.
`void`	`setValueIsAdjusting(boolean b)` Sets the model's valueIsAdjusting property.
`void`	`setValues(int newValue, int newExtent, int newMin, int newMax)` Sets the four BoundedRangeModel properties after forcing the arguments to obey the usual constraints:
`void`	`setVisibleAmount(int extent)` Set the model's extent property.
`void`	`updateUI()` Overrides `JComponent.updateUI`.

Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class JScrollBar - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

javax.swing Class JScrollBar

model

orientation

unitIncrement

blockIncrement

JScrollBar

JScrollBar

JScrollBar

getUI

updateUI

getUIClassID

getOrientation

setOrientation

getModel

setModel

getUnitIncrement

setUnitIncrement

getBlockIncrement

setBlockIncrement

getUnitIncrement

getBlockIncrement

getValue

setValue

getVisibleAmount

setVisibleAmount

getMinimum

setMinimum

getMaximum

setMaximum

getValueIsAdjusting

setValueIsAdjusting

setValues

addAdjustmentListener

removeAdjustmentListener

fireAdjustmentValueChanged

getMinimumSize

getMaximumSize

setEnabled

paramString

getAccessibleContext

javax.swing
Class JScrollBar