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

一个广播按钮菜单项的实现。一个 JRadioButtonMenuItem是一个菜单项，为一组，组中只有一个项目可以选择的菜单项的部分。选定的项目显示其选定的状态。选择它的原因任何其他选择项切换到未选中状态。控制一组单选按钮菜单项的选中状态，使用 ButtonGroup对象。

菜单项可以配置，和一定程度的控制，通过Actions。使用Action与菜单项具有超越直接配置菜单项好处多。参考 Swing Components Supporting Action更多细节，你可以在How to Use Actions找到更多信息，java教程中的一部分。

进一步的文档和示例见How to Use Menus，java教程中的一部分。

警告： Swing是线程不安全的。更多信息见Swing's Threading Policy。

警告：序列化该类的对象与以后的Swing版本不兼容。当前的序列化支持适用于短期贮藏或RMI运行相同Swing版本的应用程序之间。为1.4，为所有JavaBeans™长期存储的支持已被添加到java.beans包。请看XMLEncoder。

另请参见：

ButtonGroup

Nested Class Summary

Nested Classes

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

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字或图标 JRadioButtonMenuItem。
JRadioButtonMenuItem(Action a) 创建一个单选按钮菜单项的属性是从 Action提供。
JRadioButtonMenuItem(Icon icon) 创建一个带图标的 JRadioButtonMenuItem。
JRadioButtonMenuItem(Icon icon, boolean selected) 用指定的图像和选择状态创建一个按钮菜单项，但没有文本。
JRadioButtonMenuItem(String text) 创建一个 JRadioButtonMenuItem文本。
JRadioButtonMenuItem(String text, boolean selected) 用指定的文本和选择状态创建一个按钮菜单项。
JRadioButtonMenuItem(String text, Icon icon) 创建一个单选按钮菜单项指定的文本和 Icon。
JRadioButtonMenuItem(String text, Icon icon, boolean selected) 创建一个具有指定文本、图像和选择状态的广播按钮菜单项。

方法摘要

Modifier and Type	Method and Description
AccessibleContext	getAccessibleContext() 获取与此相关的accessiblecontext jradiobuttonmenuitem。
String	getUIClassID() 返回呈现此组件的“L”和“F”类的名称。
protected String	paramString() 返回该 JRadioButtonMenuItem字符串表示形式。

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

Constructor Detail

JRadioButtonMenuItem

public JRadioButtonMenuItem()

创建一个 JRadioButtonMenuItem没有设置文字或图标。

JRadioButtonMenuItem

public JRadioButtonMenuItem(Icon icon)

创建一个带图标的 JRadioButtonMenuItem。

参数

icon - Icon在 JRadioButtonMenuItem显示

JRadioButtonMenuItem

public JRadioButtonMenuItem(String text)

创建一个 JRadioButtonMenuItem文本。

参数

text的 JRadioButtonMenuItem文本

JRadioButtonMenuItem

public JRadioButtonMenuItem(Action a)

创建一个单选按钮菜单项的属性是从 Action提供。

参数

a -它为单选按钮菜单项的 Action

从以下版本开始：

一点三

JRadioButtonMenuItem

public JRadioButtonMenuItem(String text,
                            Icon icon)

创建一个单选按钮菜单项指定的文本和 Icon。

参数

text的 JRadioButtonMenuItem文本

icon -图标显示在 JRadioButtonMenuItem

JRadioButtonMenuItem

public JRadioButtonMenuItem(String text,
                            boolean selected)

用指定的文本和选择状态创建一个按钮菜单项。

参数

text的 CheckBoxMenuItem文本

selected的 CheckBoxMenuItem选中状态

JRadioButtonMenuItem

public JRadioButtonMenuItem(Icon icon,
                            boolean selected)

用指定的图像和选择状态创建一个按钮菜单项，但没有文本。

参数

icon，按钮要显示的图像

selected -如果是真的，按钮是最初选择；否则，按钮是最初的选择

JRadioButtonMenuItem

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

创建一个具有指定文本、图像和选择状态的广播按钮菜单项。所有其他构造函数都遵从这一个。

参数

text -显示在单选按钮的字符串

icon，按钮要显示的图像

方法详细信息

getUIClassID

public String getUIClassID()

返回呈现此组件的“L”和“F”类的名称。

重写：

getUIClassID 方法重写，继承类 JMenuItem

结果

字符串“radiobuttonmenuitemui”

另请参见：

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

paramString

protected String paramString()

返回该 JRadioButtonMenuItem字符串表示形式。此方法仅用于调试目的，返回的字符串的内容和格式可能会在实现过程中有所不同。返回的字符串是空的但可能不 null。

重写：

paramString 方法重写，继承类 JMenuItem

结果

这 JRadioButtonMenuItem字符串表示形式

getAccessibleContext

public AccessibleContext getAccessibleContext()

获取与此相关的accessiblecontext jradiobuttonmenuitem。对于jradiobuttonmenuitems的accessiblecontext，需要一个accessiblejradiobuttonmenuitem形式。一个新的accessiblejradiobuttonmenuitem实例被创建时。

Specified by:

getAccessibleContext 接口 Accessible

重写：

getAccessibleContext 方法重写，继承类 JMenuItem

结果

一个accessiblejradiobuttonmenuitem作为JRadioButtonMenuItem的accessiblecontext