Java——单选按钮：JRadioButton

import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;

//=================================================
// File Name       :	JRadioButton_demo
//------------------------------------------------------------------------------
// Author          :	Common



// 类名：myWindowEventHandle
// 属性：
// 方法：
class MyRadio{
	private JFrame frame = new JFrame("窗体");
	private Container cont = frame.getContentPane();
	private JRadioButton jrb1  = new JRadioButton("单选1");
	private JRadioButton jrb2  = new JRadioButton("单选2"); 
	private JRadioButton jrb3  = new JRadioButton("单选3"); 
	private JPanel pan = new JPanel();
	public MyRadio(){
		//定义一个面板的边框显示条
		pan.setBorder(BorderFactory.createTitledBorder("请选择按钮"));
		pan.setLayout(new GridLayout(1,3));
		ButtonGroup group = new ButtonGroup(); 
		group.add(this.jrb1);
		group.add(this.jrb2);
		group.add(this.jrb3);
		pan.add(this.jrb1);
		pan.add(this.jrb2);
		pan.add(this.jrb3);
		cont.add(pan);
		this.frame.setSize(330,80);
		this.frame.setVisible(true);
		this.frame.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e) {			//窗口关闭时触发，按下关闭按钮
			// TODO 自动生成的方法存根
			System.out.println("windowClosing-->窗口关闭");
			System.exit(1);
			}
		});
	}
}


//主类
//Function        : 	JRadioButton_demo
public class JRadioButton_demo {

	public static void main(String[] args) {
		// TODO 自动生成的方法存根
		new MyRadio();
	}

}

import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;

//=================================================
// File Name       :	JRadioButton_demo
//------------------------------------------------------------------------------
// Author          :	Common



// 类名：myWindowEventHandle
// 属性：
// 方法：
class MyRadio implements ItemListener{
	private JFrame frame = new JFrame("窗体");
	private Container cont = frame.getContentPane();
	private JRadioButton jrb1  = new JRadioButton("单选1");
	private JRadioButton jrb2  = new JRadioButton("单选2"); 
	private JRadioButton jrb3  = new JRadioButton("单选3"); 
	private JPanel pan = new JPanel();
	public MyRadio(){
		//定义一个面板的边框显示条
		pan.setBorder(BorderFactory.createTitledBorder("请选择按钮"));
		pan.setLayout(new GridLayout(1,3));
		ButtonGroup group = new ButtonGroup(); 
		group.add(this.jrb1);
		group.add(this.jrb2);
		group.add(this.jrb3);
		pan.add(this.jrb1);
		pan.add(this.jrb2);
		pan.add(this.jrb3);
		
		jrb1.addItemListener(this); 			//加入事件监听
		jrb2.addItemListener(this); 			//加入事件监听
		jrb3.addItemListener(this); 			//加入事件监听
		
		cont.add(pan);
		this.frame.setSize(330,80);
		this.frame.setVisible(true);
		this.frame.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e) {			//窗口关闭时触发，按下关闭按钮
			// TODO 自动生成的方法存根
			System.out.println("windowClosing-->窗口关闭");
			System.exit(1);
			}
		});
	}
	@Override
	public void itemStateChanged(ItemEvent e) {
		// TODO 自动生成的方法存根
		if(e.getSource() == jrb1){
			System.out.println("jrb1");
		}else if(e.getSource() == jrb2){
			System.out.println("jrb2");
		}else{
			System.out.println("jrb3");
		}
	}
}


//主类
//Function        : 	JRadioButton_demo
public class JRadioButton_demo {

	public static void main(String[] args) {
		// TODO 自动生成的方法存根
		new MyRadio();
	}

}