25---AWT和Swing(07)单选按钮(视频代码)

 

1|代码一：
 import java.awt.Container ;
 import java.awt.GridLayout ;
 import java.awt.event.WindowAdapter ;
 import java.awt.event.WindowEvent ;
 import javax.swing.JFrame ;
 import javax.swing.JPanel ;
 import javax.swing.JRadioButton ;
 import javax.swing.BorderFactory ;
 class MyRadio{
  private JFrame frame = new JFrame("Welcome TO MLDN") ;
  private Container cont = frame.getContentPane() ;
  private JRadioButton jrb1 = new JRadioButton("MLDN") ;
  private JRadioButton jrb2 = new JRadioButton("MLDNJAVA") ;
  private JRadioButton jrb3 = new JRadioButton("智囊团") ;
  private JPanel pan = new JPanel() ;
  public MyRadio(){
   pan.setBorder(BorderFactory.createTitledBorder("请选择最喜爱的网站")) ; // 设置一个边框的显示条
   pan.setLayout(new GridLayout(1,3)) ;
   pan.add(this.jrb1) ;
   pan.add(this.jrb2) ;
   pan.add(this.jrb3) ;
   cont.add(pan) ;
   this.frame.setSize(300,80) ;
   this.frame.setVisible(true) ;
   this.frame.addWindowListener(new WindowAdapter(){
    public void windowClosing(WindowEvent obj){
     System.exit(1) ;
    }
   }) ;
  }
 };
 public class JRadioButtonDemo01{
  public static void main(String args[]){
   new MyRadio() ;
  }
 };

2、代码二：
 import java.awt.Container ;
 import java.awt.GridLayout ;
 import java.awt.event.WindowAdapter ;
 import java.awt.event.WindowEvent ;
 import javax.swing.JFrame ;
 import javax.swing.JPanel ;
 import javax.swing.JRadioButton ;
 import javax.swing.ButtonGroup ;
 import javax.swing.BorderFactory ;
 class MyRadio{
  private JFrame frame = new JFrame("Welcome TO MLDN") ;
  private Container cont = frame.getContentPane() ;
  private JRadioButton jrb1 = new JRadioButton("MLDN") ;
  private JRadioButton jrb2 = new JRadioButton("MLDNJAVA") ;
  private JRadioButton jrb3 = new JRadioButton("智囊团") ;
  private JPanel pan = new JPanel() ;
  public MyRadio(){
   pan.setBorder(BorderFactory.createTitledBorder("请选择最喜爱的网站")) ; // 设置一个边框的显示条
   pan.setLayout(new GridLayout(1,3)) ;
   pan.add(this.jrb1) ;
   pan.add(this.jrb2) ;
   pan.add(this.jrb3) ;
   ButtonGroup group = new ButtonGroup() ;
   group.add(this.jrb1) ;
   group.add(this.jrb2) ;
   group.add(this.jrb3) ;
   cont.add(pan) ;
   this.frame.setSize(300,80) ;
   this.frame.setVisible(true) ;
   this.frame.addWindowListener(new WindowAdapter(){
    public void windowClosing(WindowEvent obj){
     System.exit(1) ;
    }
   }) ;
  }
 };
 public class JRadioButtonDemo02{
  public static void main(String args[]){
   new MyRadio() ;
  }
 };

3、代码三：
  import java.io.File ;
  import java.awt.Container ;
  import java.awt.GridLayout ;
  import java.awt.event.WindowAdapter ;
  import java.awt.event.ItemListener ;
  import java.awt.event.ItemEvent  ;
  import java.awt.event.WindowEvent ;
  import javax.swing.JFrame ;
  import javax.swing.JPanel ;
  import javax.swing.JRadioButton ;
  import javax.swing.ButtonGroup ;
  import javax.swing.BorderFactory ;
  import javax.swing.ImageIcon ;
  class MyRadio implements ItemListener{
   private String right = "d:" + File.separator + "right.png" ;
   private String wrong = "d:" + File.separator + "wrong.gif" ;
   private JFrame frame = new JFrame("Welcome TO MLDN") ;
   private Container cont = frame.getContentPane() ;
   private JRadioButton jrb1 = new JRadioButton("男",new ImageIcon(right),true) ;
   private JRadioButton jrb2 = new JRadioButton("女",new ImageIcon(wrong),false) ;
   private JPanel pan = new JPanel() ;
   public MyRadio(){
    pan.setBorder(BorderFactory.createTitledBorder("选择性别")) ; // 设置一个边框的显示条
    pan.setLayout(new GridLayout(1,3)) ;
    pan.add(this.jrb1) ;
    pan.add(this.jrb2) ;
    
    ButtonGroup group = new ButtonGroup() ;
    group.add(this.jrb1) ;
    group.add(this.jrb2) ;
    
    jrb1.addItemListener(this) ;
    jrb2.addItemListener(this) ;

    cont.add(pan) ;
    this.frame.setSize(300,80) ;
    this.frame.setVisible(true) ;
    this.frame.addWindowListener(new WindowAdapter(){
     public void windowClosing(WindowEvent obj){
      System.exit(1) ;
     }
    }) ;
   }
   public void itemStateChanged(ItemEvent e){
    if(e.getSource()==jrb1){
     jrb1.setIcon(new ImageIcon(right)) ;
     jrb2.setIcon(new ImageIcon(wrong)) ;
    }else{
     jrb1.setIcon(new ImageIcon(wrong)) ;
     jrb2.setIcon(new ImageIcon(right)) ;
    
    }
   }
  };
  public class JRadioButtonDemo03{
   public static void main(String args[]){
    new MyRadio() ;
   }
  };