JCheckBoxMenuItem (Java 2 Platform SE v1.4.1_"07")

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JavaTM 2 Platform
Std. Ed. v1.4.1_"07"

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## javax.swing
Class JCheckBoxMenuItem

    java.lang.Object
      |
      +--java.awt.Component
            |
            +--java.awt.Container
                  |
                  +--javax.swing.JComponent
                        |
                        +--javax.swing.AbstractButton
                              |
                              +--javax.swing.JMenuItem
                                    |
                                    +--javax.swing.JCheckBoxMenuItem

All Implemented Interfaces:
  Accessible, ImageObserver, ItemSelectable, MenuContainer, MenuElement, Serializable, SwingConstants

public class JCheckBoxMenuItem
extends JMenuItem
implements SwingConstants, Accessible

A menu item that can be selected or deselected. If selected, the menu item typically appears with a checkmark next to it. If unselected or deselected, the menu item appears without a checkmark. Like a regular menu item, a check box menu item can have either text or a graphic icon associated with it, or both.

Either `isSelected`/`setSelected` or `getState`/`setState` can be used to determine/specify the menu item's selection state. The preferred methods are `isSelected` and `setSelected`, which work for all menus and buttons. The `getState` and `setState` methods exist for compatibility with other component sets.

For further information and examples of using check box menu items, see How to Use Menus, a section in The Java Tutorial. For the keyboard keys used by this component in the standard Look and Feel (L&F) renditions, see the `JCheckBoxMenuItem` key assignments.

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`.

Nested Class Summary
`protected class` | `JCheckBoxMenuItem.AccessibleJCheckBoxMenuItem` This class implements accessibility support for the `JCheckBoxMenuItem` class.

Nested classes inherited from class javax.swing.JMenuItem
``

Nested classes inherited from class javax.swing.AbstractButton
`AbstractButton.ButtonChangeListener`

Nested classes inherited from class javax.swing.JComponent
``

Nested classes inherited from class java.awt.Container
``

Nested classes inherited from class java.awt.Component
`Component.BltBufferStrategy, Component.FlipBufferStrategy`

Field Summary

Fields inherited from class javax.swing.AbstractButton
`actionListener, BORDER_PAINTED_CHANGED_PROPERTY, changeEvent, changeListener, CONTENT_AREA_FILLED_CHANGED_PROPERTY, DISABLED_ICON_CHANGED_PROPERTY, DISABLED_SELECTED_ICON_CHANGED_PROPERTY, FOCUS_PAINTED_CHANGED_PROPERTY, HORIZONTAL_ALIGNMENT_CHANGED_PROPERTY, HORIZONTAL_TEXT_POSITION_CHANGED_PROPERTY, ICON_CHANGED_PROPERTY, itemListener, MARGIN_CHANGED_PROPERTY, MNEMONIC_CHANGED_PROPERTY, model, MODEL_CHANGED_PROPERTY, PRESSED_ICON_CHANGED_PROPERTY, ROLLOVER_ENABLED_CHANGED_PROPERTY, ROLLOVER_ICON_CHANGED_PROPERTY, ROLLOVER_SELECTED_ICON_CHANGED_PROPERTY, SELECTED_ICON_CHANGED_PROPERTY, TEXT_CHANGED_PROPERTY, VERTICAL_ALIGNMENT_CHANGED_PROPERTY, VERTICAL_TEXT_POSITION_CHANGED_PROPERTY`

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.SwingConstants
`BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST`

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

Constructor Summary
`JCheckBoxMenuItem()` Creates an initially unselected check box menu item with no set text or icon.
`JCheckBoxMenuItem(Action a)` Creates a menu item whose properties are taken from the Action supplied.
`JCheckBoxMenuItem(Icon icon)` Creates an initially unselected check box menu item with an icon.
`JCheckBoxMenuItem(String text)` Creates an initially unselected check box menu item with text.
`JCheckBoxMenuItem(String text, boolean b)` Creates a check box menu item with the specified text and selection state.
`JCheckBoxMenuItem(String text, Icon icon)` Creates an initially unselected check box menu item with the specified text and icon.
`JCheckBoxMenuItem(String text, Icon icon, boolean b)` Creates a check box menu item with the specified text, icon, and selection state.

Method Summary
`AccessibleContext` | `getAccessibleContext()` Gets the AccessibleContext associated with this JCheckBoxMenuItem.
`Object[]` | `getSelectedObjects()` Returns an array (length 1) containing the check box menu item label or null if the check box is not selected.
`boolean` | `getState()` Returns the selected-state of the item.
`String` | `getUIClassID()` Returns the name of the L&F class that renders this component.
`protected String` | `paramString()` Returns a string representation of this JCheckBoxMenuItem.
`void` | `setState(boolean b)` Sets the selected-state of the item.

Methods inherited from class javax.swing.JMenuItem
`addMenuDragMouseListener, addMenuKeyListener, configurePropertiesFromAction, createActionPropertyChangeListener, fireMenuDragMouseDragged, fireMenuDragMouseEntered, fireMenuDragMouseExited, fireMenuDragMouseReleased, fireMenuKeyPressed, fireMenuKeyReleased, fireMenuKeyTyped, getAccelerator, getComponent, getMenuDragMouseListeners, getMenuKeyListeners, getSubElements, init, isArmed, menuSelectionChanged, processKeyEvent, processMenuDragMouseEvent, processMenuKeyEvent, processMouseEvent, removeMenuDragMouseListener, removeMenuKeyListener, setAccelerator, setArmed, setEnabled, setUI, updateUI`

Methods inherited from class javax.swing.AbstractButton
`addActionListener, addChangeListener, addItemListener, checkHorizontalKey, checkVerticalKey, createActionListener, createChangeListener, createItemListener, doClick, doClick, fireActionPerformed, fireItemStateChanged, fireStateChanged, getAction, getActionCommand, getActionListeners, getChangeListeners, getDisabledIcon, getDisabledSelectedIcon, getDisplayedMnemonicIndex, getHorizontalAlignment, getHorizontalTextPosition, getIcon, getIconTextGap, getItemListeners, getLabel, getMargin, getMnemonic, getModel, getMultiClickThreshhold, getPressedIcon, getRolloverIcon, getRolloverSelectedIcon, getSelectedIcon, getText, getUI, getVerticalAlignment, getVerticalTextPosition, imageUpdate, isBorderPainted, isContentAreaFilled, isFocusPainted, isRolloverEnabled, isSelected, paintBorder, removeActionListener, removeChangeListener, removeItemListener, setAction, setActionCommand, setBorderPainted, setContentAreaFilled, setDisabledIcon, setDisabledSelectedIcon, setDisplayedMnemonicIndex, setFocusPainted, setHorizontalAlignment, setHorizontalTextPosition, setIcon, setIconTextGap, setLabel, setMargin, setMnemonic, setMnemonic, setModel, setMultiClickThreshhold, setPressedIcon, setRolloverEnabled, setRolloverIcon, setRolloverSelectedIcon, setSelected, setSelectedIcon, setText, setUI, setVerticalAlignment, setVerticalTextPosition`

Methods inherited from class javax.swing.JComponent
`addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFont, setForeground, 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, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, 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, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, 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, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, 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`

Constructor Detail

### JCheckBoxMenuItem

    public JCheckBoxMenuItem()

  Creates an initially unselected check box menu item with no set text or icon.

### JCheckBoxMenuItem

    public JCheckBoxMenuItem(Icon icon)

  Creates an initially unselected check box menu item with an icon.

Parameters:
  `icon` - the icon of the CheckBoxMenuItem.

### JCheckBoxMenuItem

    public JCheckBoxMenuItem(String text)

  Creates an initially unselected check box menu item with text.

Parameters:
  `text` - the text of the CheckBoxMenuItem

### JCheckBoxMenuItem

    public JCheckBoxMenuItem(Action a)

  Creates a menu item whose properties are taken from the Action supplied.

Since:
  1.3

### JCheckBoxMenuItem

    public JCheckBoxMenuItem(String text,
                             Icon icon)

  Creates an initially unselected check box menu item with the specified text and icon.

Parameters:
  `text` - the text of the CheckBoxMenuItem
  `icon` - the icon of the CheckBoxMenuItem

### JCheckBoxMenuItem

    public JCheckBoxMenuItem(String text,
                             boolean b)

  Creates a check box menu item with the specified text and selection state.

Parameters:
  `text` - the text of the check box menu item.
  `b` - the selected state of the check box menu item

### JCheckBoxMenuItem

    public JCheckBoxMenuItem(String text,
                             Icon icon,
                             boolean b)

  Creates a check box menu item with the specified text, icon, and selection state.

Parameters:
  `text` - the text of the check box menu item
  `icon` - the icon of the check box menu item
  `b` - the selected state of the check box menu item

Method Detail

### getUIClassID

    public String getUIClassID()

  Returns the name of the L&F class that renders this component.

  Overrides:
    `getUIClassID` in class `JMenuItem`
  Returns:
    "CheckBoxMenuItemUI"
  See Also:
    `JComponent.getUIClassID()`, `UIDefaults.getUI(javax.swing.JComponent)`

### getState

    public boolean getState()

  Returns the selected-state of the item. This method exists for AWT compatibility only. New code should use isSelected() instead.

  Returns:
    true if the item is selected

### setState

    public void setState(boolean b)

  Sets the selected-state of the item. This method exists for AWT compatibility only. New code should use setSelected() instead.

  Parameters:
    `b` - a boolean value indicating the item's selected-state, where true=selected

### getSelectedObjects

    public Object[] getSelectedObjects()

  Returns an array (length 1) containing the check box menu item label or null if the check box is not selected.

  Specified by:
    `getSelectedObjects` in interface `ItemSelectable`
  Overrides:
    `getSelectedObjects` in class `AbstractButton`
  Returns:
    an array containing one Object -- the text of the menu item -- if the item is selected; otherwise null

### paramString

    protected String paramString()

  Returns a string representation of this JCheckBoxMenuItem. 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 `JMenuItem`
  Returns:
    a string representation of this JCheckBoxMenuItem.

### getAccessibleContext

    public AccessibleContext getAccessibleContext()

  Gets the AccessibleContext associated with this JCheckBoxMenuItem. For JCheckBoxMenuItems, the AccessibleContext takes the form of an AccessibleJCheckBoxMenuItem. A new AccessibleJCheckBoxMenuItem instance is created if necessary.

  Specified by:
    `getAccessibleContext` in interface `Accessible`
  Overrides:
    `getAccessibleContext` in class `JMenuItem`
  Returns:
    an AccessibleJCheckBoxMenuItem that serves as the AccessibleContext of this AccessibleJCheckBoxMenuItem

Overview | Package | Class | Use | Tree | Deprecated | Index | Help

JavaTM 2 Platform
Std. Ed. v1.4.1_"07"

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Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.