鍍金池/ 教程/ Java/ Swing JRadioButtonMenuItem類(lèi)及例子
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Swing JRadioButtonMenuItem類(lèi)及例子
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Swing JRadioButtonMenuItem類(lèi)及例子

JRadioButtonMenuItem對(duì)象類(lèi)代表一個(gè)復(fù)選框，可以包含在一個(gè)菜單。選中該復(fù)選框菜單更改控制的狀態(tài)中，從開(kāi)到關(guān)或從關(guān)到開(kāi)。

類(lèi)聲明

以下是聲明 javax.swing.JRadioButtonMenuItem類(lèi)：

public class JRadioButtonMenuItem
   extends JMenuItem
      implements Accessible

類(lèi)構(gòu)造函數(shù)

S.N. 構(gòu)造函數(shù) & 描述
1 JRadioButtonMenuItem() 
Creates a JRadioButtonMenuItem with no set text or icon.
2 JRadioButtonMenuItem(Action a) 
Creates a radio button menu item whose properties are taken from the Action supplied.
3 JRadioButtonMenuItem(Icon icon) 
Creates a JRadioButtonMenuItem with an icon.
4 JRadioButtonMenuItem(Icon icon, boolean selected) 
Creates a radio button menu item with the specified image and selection state, but no text.
5 JRadioButtonMenuItem(String text) 
Creates a JRadioButtonMenuItem with text.
6 JRadioButtonMenuItem(String text, boolean selected) 
Creates a radio button menu item with the specified text and selection state.
7 JRadioButtonMenuItem(String text, Icon icon) 
Creates a radio button menu item with the specified text and Icon.
8 JRadioButtonMenuItem(String text, Icon icon, boolean selected) 
Creates a radio button menu item that has the specified text, image, and selection state.

類(lèi)方法

S.N. 方法 & 描述
1 AccessibleContext getAccessibleContext() 
Gets the AccessibleContext associated with this JRadioButtonMenuItem.
2 String getUIClassID() 
Returns the name of the L&F class that renders this component.
3 protected String paramString() 
Returns a string representation of this JRadioButtonMenuItem.

方法繼承

這個(gè)類(lèi)從以下類(lèi)繼承的方法：

  • javax.swing.JMenuItem

  • javax.swing.JAbstractButton

  • javax.swing.JComponent

  • java.awt.Container

  • java.awt.Component

  • java.lang.Object

JRadioButtonMenuItem 例子

選擇使用任何編輯器創(chuàng)建以下java程序在 D:/ > SWING > com > yiibai > gui >

SwingMenuDemo.java 
package com.yiibai.gui;

import java.awt.*;
import java.awt.event.*;

public class SwingMenuDemo {
   private JFrame mainFrame;
   private JLabel headerLabel;
   private JLabel statusLabel;
   private JPanel controlPanel; 

   public SwingMenuDemo(){
      prepareGUI();
   }

   public static void main(String[] args){
      SwingMenuDemo  swingMenuDemo = new SwingMenuDemo();     
      swingMenuDemo.showMenuDemo();
   }
   
   private void prepareGUI(){
      mainFrame = new JFrame("Java SWING Examples");
      mainFrame.setSize(400,400);
      mainFrame.setLayout(new GridLayout(3, 1));

      headerLabel = new JLabel("",JLabel.CENTER );
      statusLabel = new JLabel("",JLabel.CENTER);        

      statusLabel.setSize(350,100);
      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      });    
      controlPanel = new JPanel();
      controlPanel.setLayout(new FlowLayout());

      mainFrame.add(headerLabel);
      mainFrame.add(controlPanel);
      mainFrame.add(statusLabel);
      mainFrame.setVisible(true);  
   }

   private void showMenuDemo(){
      //create a menu bar
      final JMenuBar menuBar = new JMenuBar();

      //create menus
      JMenu fileMenu = new JMenu("File");
      JMenu editMenu = new JMenu("Edit"); 
      final JMenu aboutMenu = new JMenu("About");
      final JMenu linkMenu = new JMenu
            
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