javax.swing
Class JScrollPane

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JScrollPane

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, Accessible, ScrollPaneConstants

public class JScrollPane
extends JComponent
implements ScrollPaneConstants, Accessible

Provides a scrollable view of a lightweight component. A JScrollPane manages a viewport, optional vertical and horizontal scroll bars, and optional row and column heading viewports. You can find task-oriented documentation of JScrollPane in How to Use Scroll Panes, a section in The Java Tutorial. Note that JScrollPane does not support heavyweight components.

The JViewport provides a window, or "viewport" onto a data source -- for example, a text file. That data source is the "scrollable client" (aka data model) displayed by the JViewport view. A JScrollPane basically consists of JScrollBars, a JViewport, and the wiring between them, as shown in the diagram at right.

In addition to the scroll bars and viewport, a JScrollPane can have a column header and a row header. Each of these is a JViewport object that you specify with setRowHeaderView, and setColumnHeaderView. The column header viewport automatically scrolls left and right, tracking the left-right scrolling of the main viewport. (It never scrolls vertically, however.) The row header acts in a similar fashion.

Where two scroll bars meet, the row header meets the column header, or a scroll bar meets one of the headers, both components stop short of the corner, leaving a rectangular space which is, by default, empty. These spaces can potentially exist in any number of the four corners. In the previous diagram, the top right space is present and identified by the label "corner component".

Any number of these empty spaces can be replaced by using the setCorner method to add a component to a particular corner. (Note: The same component cannot be added to multiple corners.) This is useful if there's some extra decoration or function you'd like to add to the scroll pane. The size of each corner component is entirely determined by the size of the headers and/or scroll bars that surround it.

A corner component will only be visible if there is an empty space in that corner for it to exist in. For example, consider a component set into the top right corner of a scroll pane with a column header. If the scroll pane's vertical scrollbar is not present, perhaps because the view component hasn't grown large enough to require it, then the corner component will not be shown (since there is no empty space in that corner created by the meeting of the header and vertical scroll bar). Forcing the scroll bar to always be shown, using setVerticalScrollBarPolicy(VERTICAL_SCROLLBAR_ALWAYS), will ensure that the space for the corner component always exists.

To add a border around the main viewport, you can use setViewportBorder. (Of course, you can also add a border around the whole scroll pane using setBorder.)

A common operation to want to do is to set the background color that will be used if the main viewport view is smaller than the viewport, or is not opaque. This can be accomplished by setting the background color of the viewport, via scrollPane.getViewport().setBackground(). The reason for setting the color of the viewport and not the scrollpane is that by default JViewport is opaque which, among other things, means it will completely fill in its background using its background color. Therefore when JScrollPane draws its background the viewport will usually draw over it.

By default JScrollPane uses ScrollPaneLayout to handle the layout of its child Components. ScrollPaneLayout determines the size to make the viewport view in one of two ways:

1. If the view implements Scrollable a combination of getPreferredScrollableViewportSize, getScrollableTracksViewportWidth and getScrollableTracksViewportHeightis used, otherwise
2. getPreferredSize is used.

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

See Also:

JScrollBar, JViewport, ScrollPaneLayout, Scrollable, Component.getPreferredSize(), setViewportView(java.awt.Component), setRowHeaderView(java.awt.Component), setColumnHeaderView(java.awt.Component), setCorner(java.lang.String, java.awt.Component), setViewportBorder(javax.swing.border.Border)

Nested Class Summary
protected  class	JScrollPane.AccessibleJScrollPane           This class implements accessibility support for the JScrollPane class.
protected  class	JScrollPane.ScrollBar           By default JScrollPane creates scrollbars that are instances of this class.

 

Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent

 

Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer

 

Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

 

Field Summary
protected  JViewport	columnHeader           The column header child.
protected  JScrollBar	horizontalScrollBar           The scrollpane's horizontal scrollbar child.
protected  int	horizontalScrollBarPolicy           The display policy for the horizontal scrollbar.
protected  Component	lowerLeft           The component to display in the lower left corner.
protected  Component	lowerRight           The component to display in the lower right corner.
protected  JViewport	rowHeader           The row header child.
protected  Component	upperLeft           The component to display in the upper left corner.
protected  Component	upperRight           The component to display in the upper right corner.
protected  JScrollBar	verticalScrollBar           The scrollpane's vertical scrollbar child.
protected  int	verticalScrollBarPolicy           The display policy for the vertical scrollbar.
protected  JViewport	viewport           The scrollpane's viewport child.

 

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 javax.swing.ScrollPaneConstants

COLUMN_HEADER, HORIZONTAL_SCROLLBAR, HORIZONTAL_SCROLLBAR_ALWAYS, HORIZONTAL_SCROLLBAR_AS_NEEDED, HORIZONTAL_SCROLLBAR_NEVER, HORIZONTAL_SCROLLBAR_POLICY, LOWER_LEADING_CORNER, LOWER_LEFT_CORNER, LOWER_RIGHT_CORNER, LOWER_TRAILING_CORNER, ROW_HEADER, UPPER_LEADING_CORNER, UPPER_LEFT_CORNER, UPPER_RIGHT_CORNER, UPPER_TRAILING_CORNER, VERTICAL_SCROLLBAR, VERTICAL_SCROLLBAR_ALWAYS, VERTICAL_SCROLLBAR_AS_NEEDED, VERTICAL_SCROLLBAR_NEVER, VERTICAL_SCROLLBAR_POLICY, VIEWPORT

 

Fields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

 

Constructor Summary
JScrollPane()           Creates an empty (no viewport view) JScrollPane where both horizontal and vertical scrollbars appear when needed.
JScrollPane(Component view)           Creates a JScrollPane that displays the contents of the specified component, where both horizontal and vertical scrollbars appear whenever the component's contents are larger than the view.
JScrollPane(Component view, int vsbPolicy, int hsbPolicy)           Creates a JScrollPane that displays the view component in a viewport whose view position can be controlled with a pair of scrollbars.
JScrollPane(int vsbPolicy, int hsbPolicy)           Creates an empty (no viewport view) JScrollPane with specified scrollbar policies.

 

Method Summary
JScrollBar	createHorizontalScrollBar()           Returns a JScrollPane.ScrollBar by default.
JScrollBar	createVerticalScrollBar()           Returns a JScrollPane.ScrollBar by default.
protected  JViewport	createViewport()           Returns a new JViewport by default.
AccessibleContext	getAccessibleContext()           Gets the AccessibleContext associated with this JScrollPane.
JViewport	getColumnHeader()           Returns the column header.
Component	getCorner(String key)           Returns the component at the specified corner.
JScrollBar	getHorizontalScrollBar()           Returns the horizontal scroll bar that controls the viewport's horizontal view position.
int	getHorizontalScrollBarPolicy()           Returns the horizontal scroll bar policy value.
JViewport	getRowHeader()           Returns the row header.
ScrollPaneUI	getUI()           Returns the look and feel (L&F) object that renders this component.
String	getUIClassID()           Returns the suffix used to construct the name of the L&F class used to render this component.
JScrollBar	getVerticalScrollBar()           Returns the vertical scroll bar that controls the viewports vertical view position.
int	getVerticalScrollBarPolicy()           Returns the vertical scroll bar policy value.
JViewport	getViewport()           Returns the current JViewport.
Border	getViewportBorder()           Returns the Border object that surrounds the viewport.
Rectangle	getViewportBorderBounds()           Returns the bounds of the viewport's border.
boolean	isValidateRoot()           Overridden to return true so that any calls to revalidate on any descendants of this JScrollPane will cause the entire tree beginning with this JScrollPane to be validated.
boolean	isWheelScrollingEnabled()           Indicates whether or not scrolling will take place in response to the mouse wheel.
protected  String	paramString()           Returns a string representation of this JScrollPane.
void	setColumnHeader(JViewport columnHeader)           Removes the old columnHeader, if it exists; if the new columnHeader isn't null, syncs the x coordinate of its viewPosition with the viewport (if there is one) and then adds it to the scroll pane.
void	setColumnHeaderView(Component view)           Creates a column-header viewport if necessary, sets its view, and then adds the column-header viewport to the scrollpane.
void	setComponentOrientation(ComponentOrientation co)           Sets the orientation for the vertical and horizontal scrollbars as determined by the ComponentOrientation argument.
void	setCorner(String key, Component corner)           Adds a child that will appear in one of the scroll panes corners, if there's room.
void	setHorizontalScrollBar(JScrollBar horizontalScrollBar)           Adds the scrollbar that controls the viewport's horizontal view position to the scrollpane.
void	setHorizontalScrollBarPolicy(int policy)           Determines when the horizontal scrollbar appears in the scrollpane.
void	setLayout(LayoutManager layout)           Sets the layout manager for this JScrollPane.
void	setRowHeader(JViewport rowHeader)           Removes the old rowHeader, if it exists; if the new rowHeader isn't null, syncs the y coordinate of its viewPosition with the viewport (if there is one) and then adds it to the scroll pane.
void	setRowHeaderView(Component view)           Creates a row-header viewport if necessary, sets its view and then adds the row-header viewport to the scrollpane.
void	setUI(ScrollPaneUI ui)           Sets the ScrollPaneUI object that provides the look and feel (L&F) for this component.
void	setVerticalScrollBar(JScrollBar verticalScrollBar)           Adds the scrollbar that controls the viewports vertical view position to the scrollpane.
void	setVerticalScrollBarPolicy(int policy)           Determines when the vertical scrollbar appears in the scrollpane.
void	setViewport(JViewport viewport)           Removes the old viewport (if there is one); forces the viewPosition of the new viewport to be in the +x,+y quadrant; syncs up the row and column headers (if there are any) with the new viewport; and finally syncs the scrollbars and headers with the new viewport.
void	setViewportBorder(Border viewportBorder)           Adds a border around the viewport.
void	setViewportView(Component view)           Creates a viewport if necessary and then sets its view.
void	setWheelScrollingEnabled(boolean handleWheel)           Enables/disables scrolling in response to movement of the mouse wheel.
void	updateUI()           Replaces the current ScrollPaneUI object with a version from the current default look and feel.

 

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, 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, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, 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, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

 

Methods inherited from 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, transferFocusBackward, transferFocusDownCycle, validate, validateTree

 

Methods inherited from 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, 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, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, 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, resize, resize, setBounds, setBounds, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

verticalScrollBarPolicy

protected int verticalScrollBarPolicy

The display policy for the vertical scrollbar. The default is ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED.

See Also:

setVerticalScrollBarPolicy(int)

horizontalScrollBarPolicy

protected int horizontalScrollBarPolicy

The display policy for the horizontal scrollbar. The default is ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED.

See Also:

setHorizontalScrollBarPolicy(int)

viewport

protected JViewport viewport

The scrollpane's viewport child. Default is an empty JViewport.

See Also:

setViewport(javax.swing.JViewport)

verticalScrollBar

protected JScrollBar verticalScrollBar

The scrollpane's vertical scrollbar child. Default is a JScrollBar.

See Also:

setVerticalScrollBar(javax.swing.JScrollBar)

horizontalScrollBar

protected JScrollBar horizontalScrollBar

The scrollpane's horizontal scrollbar child. Default is a JScrollBar.

See Also:

setHorizontalScrollBar(javax.swing.JScrollBar)

rowHeader

protected JViewport rowHeader

The row header child. Default is null.

See Also:

setRowHeader(javax.swing.JViewport)

columnHeader

protected JViewport columnHeader

The column header child. Default is null.

See Also:

setColumnHeader(javax.swing.JViewport)

lowerLeft

protected Component lowerLeft

The component to display in the lower left corner. Default is null.

See Also:

setCorner(java.lang.String, java.awt.Component)

lowerRight

protected Component lowerRight

The component to display in the lower right corner. Default is null.

See Also:

setCorner(java.lang.String, java.awt.Component)

upperLeft

protected Component upperLeft

The component to display in the upper left corner. Default is null.

See Also:

setCorner(java.lang.String, java.awt.Component)

upperRight

protected Component upperRight

The component to display in the upper right corner. Default is null.

See Also:

setCorner(java.lang.String, java.awt.Component)

JScrollPane

public JScrollPane(Component view,
                   int vsbPolicy,
                   int hsbPolicy)

Creates a JScrollPane that displays the view component in a viewport whose view position can be controlled with a pair of scrollbars. The scrollbar policies specify when the scrollbars are displayed, For example, if vsbPolicy is VERTICAL_SCROLLBAR_AS_NEEDED then the vertical scrollbar only appears if the view doesn't fit vertically. The available policy settings are listed at setVerticalScrollBarPolicy(int) and setHorizontalScrollBarPolicy(int).

Parameters:

view - the component to display in the scrollpanes viewport

vsbPolicy - an integer that specifies the vertical scrollbar policy

hsbPolicy - an integer that specifies the horizontal scrollbar policy

See Also:

setViewportView(java.awt.Component)

JScrollPane

public JScrollPane(Component view)

Creates a JScrollPane that displays the contents of the specified component, where both horizontal and vertical scrollbars appear whenever the component's contents are larger than the view.

Parameters:

view - the component to display in the scrollpane's viewport

See Also:

setViewportView(java.awt.Component)

JScrollPane

public JScrollPane(int vsbPolicy,
                   int hsbPolicy)

Creates an empty (no viewport view) JScrollPane with specified scrollbar policies. The available policy settings are listed at setVerticalScrollBarPolicy(int) and setHorizontalScrollBarPolicy(int).

Parameters:

vsbPolicy - an integer that specifies the vertical scrollbar policy

hsbPolicy - an integer that specifies the horizontal scrollbar policy

See Also:

setViewportView(java.awt.Component)

JScrollPane

public JScrollPane()

Creates an empty (no viewport view) JScrollPane where both horizontal and vertical scrollbars appear when needed.

getUI

public ScrollPaneUI getUI()

Returns the look and feel (L&F) object that renders this component.

Returns:

the ScrollPaneUI object that renders this component

See Also:

setUI(javax.swing.plaf.ScrollPaneUI)

setUI

public void setUI(ScrollPaneUI ui)

Sets the ScrollPaneUI object that provides the look and feel (L&F) for this component.

Parameters:

ui - the ScrollPaneUI L&F object

See Also:

getUI()

updateUI

public void updateUI()

Replaces the current ScrollPaneUI object with a version from the current default look and feel. To be called when the default look and feel changes.

Overrides:

updateUI in class JComponent

See Also:

JComponent.updateUI(), UIManager.getUI(javax.swing.JComponent)

getUIClassID

public String getUIClassID()

Returns the suffix used to construct the name of the L&F class used to render this component.

Overrides:

getUIClassID in class JComponent

Returns:

the string "ScrollPaneUI"

See Also:

JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)

setLayout

public void setLayout(LayoutManager layout)

Sets the layout manager for this JScrollPane. This method overrides setLayout in java.awt.Container to ensure that only LayoutManagers which are subclasses of ScrollPaneLayout can be used in a JScrollPane. If layout is non-null, this will invoke syncWithScrollPane on it.

Overrides:

setLayout in class Container

Parameters:

layout - the specified layout manager

Throws:

ClassCastException - if layout is not a ScrollPaneLayout

See Also:

Container.getLayout(), Container.setLayout(java.awt.LayoutManager)

isValidateRoot

public boolean isValidateRoot()

Overridden to return true so that any calls to revalidate on any descendants of this JScrollPane will cause the entire tree beginning with this JScrollPane to be validated.

Overrides:

isValidateRoot in class JComponent

Returns:

true

See Also:

Container.validate(), JComponent.revalidate(), JComponent.isValidateRoot()

getVerticalScrollBarPolicy

public int getVerticalScrollBarPolicy()

Returns the vertical scroll bar policy value.

Returns:

the verticalScrollBarPolicy property

See Also:

setVerticalScrollBarPolicy(int)

setVerticalScrollBarPolicy

public void setVerticalScrollBarPolicy(int policy)

Determines when the vertical scrollbar appears in the scrollpane. Legal values are:

• ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED
• ScrollPaneConstants.VERTICAL_SCROLLBAR_NEVER
• ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS

Parameters:

policy - one of the three values listed above

Throws:

IllegalArgumentException - if policy is not one of the legal values shown above

See Also:

getVerticalScrollBarPolicy()

getHorizontalScrollBarPolicy

public int getHorizontalScrollBarPolicy()

Returns the horizontal scroll bar policy value.

Returns:

the horizontalScrollBarPolicy property

See Also:

setHorizontalScrollBarPolicy(int)

setHorizontalScrollBarPolicy

public void setHorizontalScrollBarPolicy(int policy)

Determines when the horizontal scrollbar appears in the scrollpane. The options are:

• ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED
• ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER
• ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS

Parameters:

policy - one of the three values listed above

Throws:

IllegalArgumentException - if policy is not one of the legal values shown above

See Also:

getHorizontalScrollBarPolicy()

getViewportBorder

public Border getViewportBorder()

Returns the Border object that surrounds the viewport.

Returns:

the viewportBorder property

See Also:

setViewportBorder(javax.swing.border.Border)

setViewportBorder

public void setViewportBorder(Border viewportBorder)

Adds a border around the viewport. Note that the border isn't set on the viewport directly, JViewport doesn't support the JComponent border property. Similarly setting the JScrollPanes viewport doesn't affect the viewportBorder property.

The default value of this property is computed by the look and feel implementation.

Parameters:

viewportBorder - the border to be added

See Also: