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 Actions. 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.
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.
ButtonGroup| Modifier and Type | Class and Description |
|---|---|
protected class |
JRadioButtonMenuItem.AccessibleJRadioButtonMenuItem This class implements accessibility support for the |
JMenuItem.AccessibleJMenuItem AbstractButton.AccessibleAbstractButton, AbstractButton.ButtonChangeListener JComponent.AccessibleJComponent Container.AccessibleAWTContainer Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy 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 listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH public JRadioButtonMenuItem()
Creates a JRadioButtonMenuItem with no set text or icon.
public JRadioButtonMenuItem(Icon icon)
Creates a JRadioButtonMenuItem with an icon.
icon - the Icon to display on the JRadioButtonMenuItem
public JRadioButtonMenuItem(String text)
Creates a JRadioButtonMenuItem with text.
text - the text of the JRadioButtonMenuItem
public JRadioButtonMenuItem(Action a)
Creates a radio button menu item whose properties are taken from the Action supplied.
a - the Action on which to base the radio button menu itempublic JRadioButtonMenuItem(String text,
Icon icon) Creates a radio button menu item with the specified text and Icon.
text - the text of the JRadioButtonMenuItem
icon - the icon to display on the JRadioButtonMenuItem
public JRadioButtonMenuItem(String text,
boolean selected) Creates a radio button menu item with the specified text and selection state.
text - the text of the CheckBoxMenuItem
selected - the selected state of the CheckBoxMenuItem
public JRadioButtonMenuItem(Icon icon,
boolean selected) Creates a radio button menu item with the specified image and selection state, but no text.
icon - the image that the button should displayselected - if true, the button is initially selected; otherwise, the button is initially unselectedpublic 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.
text - the string displayed on the radio buttonicon - the image that the button should displaypublic String getUIClassID()
Returns the name of the L&F class that renders this component.
getUIClassID in class JMenuItem
JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)
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.
paramString in class JMenuItem
JRadioButtonMenuItem
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.
getAccessibleContext in interface Accessible
getAccessibleContext in class JMenuItem
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