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

public class JRadioButtonMenuItem
extends JMenuItem
implements Accessible

单选按钮菜单项的实现。 A JRadioButtonMenuItem是菜单项，它是一组菜单项的一部分，其中只能选择一个组中的一个项目。 所选项显示其所选状态。 选择它将导致任何其他所选项目切换到未选择的状态。 要控制一组单选按钮菜单项的选定状态，请使用ButtonGroup对象。

菜单项可以配置，以及一定程度的控制，通过Action秒。 使用带有菜单项的Action除了直接配置菜单项之外，还有很多好处。 请参阅Swing Components Supporting Action了解更多详情，您可以找到更多信息How to Use Actions ，在Java教程的部分。

有关进一步的文档和示例，请参阅“Java教程 ”中的 How to Use Menus 。

警告： Swing不是线程安全的。 有关更多信息，请参阅Swing's Threading Policy 。

警告：此类的序列化对象与将来的Swing版本不兼容。 当前的序列化支持适用于运行相同版本的Swing的应用程序之间的短期存储或RMI。 从1.4开始，对所有JavaBeans的长期存储的支持已经添加到java.beans包中。 请参阅XMLEncoder 。

另请参见：

ButtonGroup

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	JRadioButtonMenuItem.AccessibleJRadioButtonMenuItem 这个类实现了可访问性支持 JRadioButtonMenuItem类。

Nested classes/interfaces inherited from class javax.swing.JMenuItem

JMenuItem.AccessibleJMenuItem

Nested classes/interfaces inherited from class javax.swing.AbstractButton

AbstractButton.AccessibleAbstractButton, AbstractButton.ButtonChangeListener

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

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, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

accessibleContext, 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

构造方法摘要

构造方法

Constructor and Description
JRadioButtonMenuItem() 创建一个没有设置文本或图标的 JRadioButtonMenuItem 。
JRadioButtonMenuItem(Action a) 创建一个单选按钮菜单项，其属性取自提供的 Action 。
JRadioButtonMenuItem(Icon icon) 创建一个带有图标的 JRadioButtonMenuItem 。
JRadioButtonMenuItem(Icon icon, boolean selected) 创建具有指定图像和选择状态但无文字的单选按钮菜单项。
JRadioButtonMenuItem(String text) 创建一个带文本的 JRadioButtonMenuItem 。
JRadioButtonMenuItem(String text, boolean selected) 创建具有指定文本和选择状态的单选按钮菜单项。
JRadioButtonMenuItem(String text, Icon icon) 创建一个包含指定文本的单选按钮菜单项和 Icon 。
JRadioButtonMenuItem(String text, Icon icon, boolean selected) 创建具有指定文本，图像和选择状态的单选按钮菜单项。

方法摘要

Modifier and Type	Method and Description
AccessibleContext	getAccessibleContext() 获取与此JRadioButtonMenuItem关联的AccessibleContext。
String	getUIClassID() 返回呈现此组件的L＆F类的名称。
protected String	paramString() 返回此 JRadioButtonMenuItem的字符串表示 JRadioButtonMenuItem 。

Methods inherited from 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 inherited from 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 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, 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 inherited from 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 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, 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, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造方法详细信息

JRadioButtonMenuItem

public JRadioButtonMenuItem()

创建一个没有设置文本或图标的 JRadioButtonMenuItem 。

JRadioButtonMenuItem

public JRadioButtonMenuItem(Icon icon)

创建一个带有图标的 JRadioButtonMenuItem 。

参数

icon - Icon显示在 JRadioButtonMenuItem

JRadioButtonMenuItem

public JRadioButtonMenuItem(String text)

创建一个 JRadioButtonMenuItem与文本。

参数

text - 文字 JRadioButtonMenuItem

JRadioButtonMenuItem

public JRadioButtonMenuItem(Action a)

创建一个单选按钮菜单项，其属性取自提供的 Action 。

参数

a - 基于单选按钮菜单项的 Action

从以下版本开始：

1.3

JRadioButtonMenuItem

public JRadioButtonMenuItem(String text,
                            Icon icon)

创建具有指定文本的单选按钮菜单项， Icon 。

参数

text - 文字 JRadioButtonMenuItem

icon - 显示在 JRadioButtonMenuItem上的 JRadioButtonMenuItem

JRadioButtonMenuItem

public JRadioButtonMenuItem(String text,
                            boolean selected)

创建具有指定文本和选择状态的单选按钮菜单项。

参数

text - 文字 CheckBoxMenuItem

selected - 所选状态的 CheckBoxMenuItem

JRadioButtonMenuItem

public JRadioButtonMenuItem(Icon icon,
                            boolean selected)

创建具有指定图像和选择状态但无文字的单选按钮菜单项。

参数

icon - 按钮应该显示的图像

selected - 如果为真，则初始选择该按钮; 否则，该按钮最初未被选择

JRadioButtonMenuItem

public JRadioButtonMenuItem(String text,
                            Icon icon,
                            boolean selected)

创建具有指定文本，图像和选择状态的单选按钮菜单项。 所有其他构造函数都遵循这一个。

参数

text - 单选按钮上显示的字符串

icon - 按钮应该显示的图像

方法详细信息

getUIClassID

public String getUIClassID()

返回呈现此组件的L＆F类的名称。

重写：

getUIClassID在 JMenuItem

结果

字符串“RadioButtonMenuItemUI”

另请参见：

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

paramString

protected String paramString()

返回此JRadioButtonMenuItem的字符串表示JRadioButtonMenuItem 。 该方法仅用于调试目的，并且返回的字符串的内容和格式可能因实现而异。 返回的字符串可能为空，但可能不是null 。

重写：

paramString在 JMenuItem

结果

这个 JRadioButtonMenuItem的字符串 JRadioButtonMenuItem

getAccessibleContext

public AccessibleContext getAccessibleContext()

获取与此JRadioButtonMenuItem关联的AccessibleContext。 对于JRadioButtonMenuItems，AccessibleContext采用AccessibleJRadioButtonMenuItem的形式。 如有必要，将创建一个新的AccessibleJRadioButtonMenuItem实例。

Specified by:

getAccessibleContext在接口 Accessible

重写：

getAccessibleContext在 JMenuItem

结果

一个AccessibleJRadioButtonMenuItem，用作这个JRadioButtonMenuItem的AccessibleContext