javax.swing.JScrollBar

All Implemented Interfaces:: Adjustable, ImageObserver, MenuContainer, Serializable, Accessible

Direct Known Subclasses:: JScrollPane.ScrollBar

@JavaBean(defaultProperty="UI",
          description="A component that helps determine the visible content range of an area.")
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 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

Modifier and Type Class Description

protected class JScrollBar.AccessibleJScrollBar
This class implements accessibility support for the JScrollBar class.

Nested classes/interfaces declared in class javax.swing.JComponent
JComponent.AccessibleJComponent

Nested classes/interfaces declared in class java.awt.Container
Container.AccessibleAWTContainer

Nested classes/interfaces declared in class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields
Modifier and Type	Field	Description
`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 declared in class javax.swing.JComponent

listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields declared in class java.awt.Component

accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields declared in interface java.awt.Adjustable

HORIZONTAL, NO_ORIENTATION, VERTICAL

Fields declared in interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Constructors
Constructor	Description
`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, minimum, and maximum.

Method Summary

Modifier and Type	Method	Description
`void`	`addAdjustmentListener(AdjustmentListener l)`	Adds an AdjustmentListener.
`protected void`	`fireAdjustmentValueChanged(int id, int type, int value)`	Notify listeners that the scrollbar's model has changed.
`AccessibleContext`	`getAccessibleContext()`	Gets the AccessibleContext associated with this JScrollBar.
`AdjustmentListener[]`	`getAdjustmentListeners()`	Returns an array of all the `AdjustmentListener`s added to this JScrollBar with addAdjustmentListener().
`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`	`setUI(ScrollBarUI ui)`	Sets the L&F object that renders this component.
`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 declared in class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods declared in class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree

Methods declared in class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, 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, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods declared in class java.lang.Object

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

Field Details
- 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 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 - 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
  
  @BeanProperty(hidden=true, visualUpdate=true, description="The UI object that implements the Component\'s LookAndFeel") public void setUI(ScrollBarUI ui)
  
  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
  
  public ScrollBarUI getUI()
  
  Returns the delegate that implements the look and feel for this component.
  
  Overrides:
  
  getUI in class JComponent
  
  Returns:
  
  the scroll bar's current UI.
  
  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
  
  @BeanProperty(bound=false) public String getUIClassID()
  
  Returns the name of the LookAndFeel class for this component.
  
  Overrides:
  
  getUIClassID in class JComponent
  
  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 in interface Adjustable
  
  Returns:
  
  VERTICAL or HORIZONTAL
  
  See Also:
  
  setOrientation(int), Adjustable.getOrientation()
- setOrientation
  
  @BeanProperty(preferred=true, visualUpdate=true, enumerationValues={"JScrollBar.VERTICAL","JScrollBar.HORIZONTAL"}, description="The scrollbar\'s orientation.") public void setOrientation(int orientation)
  
  Set the scrollbar's orientation to either VERTICAL or HORIZONTAL.
  
  Parameters:
  
  orientation - an orientation of the JScrollBar
  
  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.
  
  Returns:
  
  the data model
  
  See Also:
  
  setModel(javax.swing.BoundedRangeModel)
- setModel
  
  @BeanProperty(expert=true, description="The scrollbar\'s BoundedRangeModel.") public void setModel(BoundedRangeModel newModel)
  
  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
  
  @BeanProperty(preferred=true, description="The scrollbar\'s unit increment.") public void setUnitIncrement(int unitIncrement)
  
  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 in interface Adjustable
  
  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
  
  @BeanProperty(preferred=true, description="The scrollbar\'s block increment.") public void setBlockIncrement(int blockIncrement)
  
  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 in interface Adjustable
  
  Parameters:
  
  blockIncrement - the block increment
  
  See Also:
  
  getBlockIncrement()
- getUnitIncrement
  
  public int getUnitIncrement()
  
  For backwards compatibility with java.awt.Scrollbar.
  
  Specified by:
  
  getUnitIncrement in interface Adjustable
  
  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 in interface Adjustable
  
  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 in interface Adjustable
  
  Returns:
  
  the model's value property
  
  See Also:
  
  setValue(int)
- setValue
  
  @BeanProperty(bound=false, preferred=true, description="The scrollbar\'s current value.") 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
  
  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 in interface Adjustable
  
  Returns:
  
  the value of the model's extent property
  
  See Also:
  
  setVisibleAmount(int)
- setVisibleAmount
  
  @BeanProperty(bound=false, preferred=true, description="The amount of the view that is currently visible.") public void setVisibleAmount(int extent)
  
  Set the model's extent property.
  
  Specified by:
  
  setVisibleAmount in interface Adjustable
  
  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 in interface Adjustable
  
  Returns:
  
  the value of the model's minimum property
  
  See Also:
  
  setMinimum(int)
- setMinimum
  
  @BeanProperty(bound=false, preferred=true, description="The scrollbar\'s minimum value.") public void setMinimum(int minimum)
  
  Sets the model's minimum property.
  
  Specified by:
  
  setMinimum in interface Adjustable
  
  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 in interface Adjustable
  
  Returns:
  
  the value of the model's maximum property
  
  See Also:
  
  setMaximum(int)
- setMaximum
  
  @BeanProperty(bound=false, preferred=true, description="The scrollbar\'s maximum value.") 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
  
  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
  
  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 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 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)
- getAdjustmentListeners
  
  @BeanProperty(bound=false) public 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
  
  public Dimension getMinimumSize()
  
  The scrollbar is flexible along it's scrolling axis and rigid along the other axis.
  
  Overrides:
  
  getMinimumSize in class JComponent
  
  Returns:
  
  the value of the minimumSize property
  
  See Also:
  
  JComponent.setMinimumSize(java.awt.Dimension), ComponentUI
- getMaximumSize
  
  public Dimension getMaximumSize()
  
  The scrollbar is flexible along it's scrolling axis and rigid along the other axis.
  
  Overrides:
  
  getMaximumSize in class JComponent
  
  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 in class JComponent
  
  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 in class JComponent
  
  Returns:
  
  a string representation of this JScrollBar.
- getAccessibleContext
  
  @BeanProperty(bound=false) public AccessibleContext 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 in interface Accessible
  
  Overrides:
  
  getAccessibleContext in class Component
  
  Returns:
  
  an AccessibleJScrollBar that serves as the AccessibleContext of this JScrollBar

Class JScrollBar

Nested Class Summary

Nested classes/interfaces declared in class javax.swing.JComponent

Nested classes/interfaces declared in class java.awt.Container

Nested classes/interfaces declared in class java.awt.Component