Module java.desktop
Package javax.swing

# Class JRadioButtonMenuItem

java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.AbstractButton
javax.swing.JMenuItem
javax.swing.JRadioButtonMenuItem

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

@JavaBean(description="A component within a group of menu items which can be selected.") public class JRadioButtonMenuItem extends JMenuItem implements Accessible
An implementation of a radio button menu item. A `JRadioButtonMenuItem` is a menu item that is part of a group of menu items in which only one item in the group can be selected. The selected item displays its selected state. Selecting it causes any other selected item to switch to the unselected state. To control the selected state of a group of radio button menu items, use a `ButtonGroup` object.

Menu items can be configured, and to some degree controlled, by `Action`s. Using an `Action` with a menu item has many benefits beyond directly configuring a menu item. Refer to Swing Components Supporting `Action` for more details, and you can find more information in How to Use Actions, a section in The Java Tutorial.

Some menus can have several button groups with radio button menu items. In this case it is useful that clicking on one radio button menu item does not close the menu. Such behavior can be controlled either by client `JComponent.putClientProperty(java.lang.Object, java.lang.Object)` or the Look and Feel `UIManager.put(java.lang.Object, java.lang.Object)` property named `"RadioButtonMenuItem.doNotCloseOnMouseClick"`. The default value is `false`. Setting the property to `true` prevents the menu from closing when it is clicked by the mouse. If the client property is set its value is always used; otherwise the L&F property is queried. Note: some `L&F`s may ignore this property. All built-in `L&F`s inherit this behaviour.

For further documentation and examples see How to Use Menus, a section in The Java Tutorial.

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:
  - `ButtonGroup`

## Nested Class Summary

Nested Classes
Modifier and Type
Class
Description
`protected class`
`JRadioButtonMenuItem.AccessibleJRadioButtonMenuItem`
This class implements accessibility support for the `JRadioButtonMenuItem` class.

## Nested classes/interfaces declared in class javax.swing.JMenuItem

`JMenuItem.AccessibleJMenuItem`

## Nested classes/interfaces declared in class javax.swing.AbstractButton

`AbstractButton.AccessibleAbstractButton, AbstractButton.ButtonChangeListener`

## 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 declared in 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 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.image.ImageObserver

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

### Fields declared in 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`

## Constructor Summary

Constructors
Constructor
Description
`JRadioButtonMenuItem()`
Creates a `JRadioButtonMenuItem` with no set text or icon.
`JRadioButtonMenuItem(String text)`
Creates a `JRadioButtonMenuItem` with text.
`JRadioButtonMenuItem(String text, boolean selected)`
Creates a radio button menu item with the specified text and selection state.
`JRadioButtonMenuItem(String text, Icon icon)`
Creates a radio button menu item with the specified text and `Icon`.
`JRadioButtonMenuItem(String text, Icon icon, boolean selected)`
Creates a radio button menu item that has the specified text, image, and selection state.
`JRadioButtonMenuItem(Action a)`
Creates a radio button menu item whose properties are taken from the `Action` supplied.
`JRadioButtonMenuItem(Icon icon)`
Creates a `JRadioButtonMenuItem` with an icon.
`JRadioButtonMenuItem(Icon icon, boolean selected)`
Creates a radio button menu item with the specified image and selection state, but no text.

## Method Summary

Modifier and Type
Method
Description
`AccessibleContext`
`getAccessibleContext()`
Gets the AccessibleContext associated with this JRadioButtonMenuItem.
`String`
`getUIClassID()`
Returns the name of the L&F class that renders this component.
`protected String`
`paramString()`
Returns a string representation of this `JRadioButtonMenuItem`.

### Methods declared in class javax.swing.JMenuItem

`actionPropertyChanged, addMenuDragMouseListener, addMenuKeyListener, configurePropertiesFromAction, fireMenuDragMouseDragged, fireMenuDragMouseEntered, fireMenuDragMouseExited, fireMenuDragMouseReleased, fireMenuKeyPressed, fireMenuKeyReleased, fireMenuKeyTyped, getAccelerator, getComponent, getMenuDragMouseListeners, getMenuKeyListeners, getSubElements, init, isArmed, menuSelectionChanged, processKeyEvent, processMenuDragMouseEvent, processMenuKeyEvent, processMouseEvent, removeMenuDragMouseListener, removeMenuKeyListener, setAccelerator, setArmed, setEnabled, setModel, setUI, updateUI`

### Methods declared in class javax.swing.AbstractButton

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

### 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, getMaximumSize, getMinimumSize, 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, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, 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, 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, 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, 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`

## Constructor Details

### JRadioButtonMenuItem

public JRadioButtonMenuItem()
Creates a `JRadioButtonMenuItem` with no set text or icon.

### JRadioButtonMenuItem

public JRadioButtonMenuItem(Icon icon)
Creates a `JRadioButtonMenuItem` with an icon.

Parameters:
  `icon` - the `Icon` to display on the `JRadioButtonMenuItem`

### JRadioButtonMenuItem

public JRadioButtonMenuItem(String text)
Creates a `JRadioButtonMenuItem` with text.

Parameters:
  `text` - the text of the `JRadioButtonMenuItem`

### JRadioButtonMenuItem

public JRadioButtonMenuItem(Action a)
Creates a radio button menu item whose properties are taken from the `Action` supplied.

Parameters:
  `a` - the `Action` on which to base the radio button menu item
Since:
  1.3

### JRadioButtonMenuItem

public JRadioButtonMenuItem(String text, Icon icon)
Creates a radio button menu item with the specified text and `Icon`.

Parameters:
  `text` - the text of the `JRadioButtonMenuItem`
  `icon` - the icon to display on the `JRadioButtonMenuItem`

### JRadioButtonMenuItem

public JRadioButtonMenuItem(String text, boolean selected)
Creates a radio button menu item with the specified text and selection state.

Parameters:
  `text` - the text of the `CheckBoxMenuItem`
  `selected` - the selected state of the `CheckBoxMenuItem`

### JRadioButtonMenuItem

public JRadioButtonMenuItem(Icon icon, boolean selected)
Creates a radio button menu item with the specified image and selection state, but no text.

Parameters:
  `icon` - the image that the button should display
  `selected` - if true, the button is initially selected; otherwise, the button is initially unselected

### JRadioButtonMenuItem

public JRadioButtonMenuItem(String text, Icon icon, boolean selected)
Creates a radio button menu item that has the specified text, image, and selection state. All other constructors defer to this one.

Parameters:
  `text` - the string displayed on the radio button
  `icon` - the image that the button should display
  `selected` - if `true`, the button is initially selected, otherwise, the button is initially unselected

## Method Details

### getUIClassID

@BeanProperty(bound=false) public String getUIClassID()
Returns the name of the L&F class that renders this component.

Overrides:
  `getUIClassID` in class `JMenuItem`
Returns:
  the string "RadioButtonMenuItemUI"
See Also:
  - `JComponent.getUIClassID()`
  - `UIDefaults.getUI(javax.swing.JComponent)`

### paramString

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

### getAccessibleContext

@BeanProperty(bound=false) public AccessibleContext getAccessibleContext()
Gets the AccessibleContext associated with this JRadioButtonMenuItem. For JRadioButtonMenuItems, the AccessibleContext takes the form of an AccessibleJRadioButtonMenuItem. A new AccessibleJRadioButtonMenuItem instance is created if necessary.

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