testjradiobutton.java

一个GUI编程的例子 一个GUI编程的例子

import javax.swing.*;

import java.awt.event.*;

public class testJRadioButton extends JFrame{

    JPanel jpanel1;

    JRadioButton jrb1=new JRadioButton("苹果");

    JRadioButton jrb2=new JRadioButton("香焦",true);

    JRadioButton jrb3=new JRadioButton("西瓜");

    ButtonGroup buttongroup1=new ButtonGroup();

    public testJRadioButton(){

        super("testJRadionButton");

        setSize(300,100);

        jpanel1=new JPanel();

        buttongroup1.add(jrb1);

        buttongroup1.add(jrb2);

        jpanel1.add(jrb1);

        jpanel1.add(jrb2);

        jpanel1.add(jrb3);

        this.setContentPane(jpanel1);

        }

    public static void main(String[] arg){

        testJRadioButton trb=new testJRadioButton();

        trb.show();

        trb.addWindowListener(new WindowAdapter(){

        public void windowClosing(WindowEvent e){

            System.exit(0);

            }

        });

        }

    }