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:

java.awt.image.ImageObserver, java.awt.ItemSelectable, MenuElement, java.io.Serializable, SwingConstants

public class JCheckBoxMenuItem

extends JMenuItem

implements SwingConstants

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.

isSelected/setSelected 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.

For further information and examples of using check box menu items, see How to Use Menus, a section in The Java Tutorial.

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 java.beans.XMLEncoder.

Nested Class Summary

Nested classes inherited from class javax.swing.AbstractButton

AbstractButton.ButtonChangeListener

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

listenerList, TOOL_TIP_TEXT_KEY, 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(java.lang.String text)
Creates an initially unselected check box menu item with text.

JCheckBoxMenuItem(java.lang.String text, boolean b)
Creates a check box menu item with the specified text and selection state.

JCheckBoxMenuItem(java.lang.String text, Icon icon)
Creates an initially unselected check box menu item with the specified text and icon.

JCheckBoxMenuItem(java.lang.String text, Icon icon, boolean b)
Creates a check box menu item with the specified text, icon, and selection state.

Method Summary

java.lang.Object[]	getSelectedObjects() Returns an array (length 1) containing the check box menu item label or null if the check box is not selected.
protected java.lang.String	paramString() Returns a string representation of this JCheckBoxMenuItem.

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, paint, paintBorder, paintComponent, paintComponents, printBorder, printComponent, printComponents, processKeyEvent, processMenuDragMouseEvent, processMenuKeyEvent, processMouseEvent, removeMenuDragMouseListener, removeMenuKeyListener, setAccelerator, setArmed, setEnabled

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, getMargin, getMnemonic, getModel, getMultiClickThreshhold, getPressedIcon, getRolloverIcon, getRolloverSelectedIcon, getSelectedIcon, getText, getVerticalAlignment, getVerticalTextPosition, imageUpdate, isBorderPainted, isContentAreaFilled, isFocusPainted, isRolloverEnabled, isSelected, removeActionListener, removeChangeListener, removeItemListener, setAction, setActionCommand, setBorderPainted, setContentAreaFilled, setDisabledIcon, setDisabledSelectedIcon, setDisplayedMnemonicIndex, setFocusPainted, setHorizontalAlignment, setHorizontalTextPosition, setIcon, setIconTextGap, setMargin, setMnemonic, setModel, setMultiClickThreshhold, setPressedIcon, setRolloverEnabled, setRolloverIcon, setRolloverSelectedIcon, setSelected, setSelectedIcon, setText, setVerticalAlignment, setVerticalTextPosition

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getSize, getToolTipText, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, isDoubleBuffered, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paintChildren, paintImmediately, paintImmediately, print, printAll, printChildren, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDefaultLocale, setDoubleBuffered, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, areFocusTraversalKeysSet, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, list, list, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getCursor, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getSize, getToolkit, getTreeLock, hasFocus, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, list, list, list, paintAll, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, setBounds, setBounds, setCursor, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, 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(java.lang.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(java.lang.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(java.lang.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(java.lang.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

getSelectedObjects

public java.lang.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 java.awt.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 java.lang.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.