radiobuttondemo.java

来自「java 完全探索的随书源码」· Java 代码 · 共 57 行

// RadioButtonDemo.java

import javax.swing.*;

import java.awt.event.*;

class RadioButtonDemo extends JFrame
{
   RadioButtonDemo (String title)
   {
      super (title);

      addWindowListener (new WindowAdapter ()
                         {
                             public void windowClosing (WindowEvent e)
                             {
                                System.exit (0);
                             }
                         });

      JRadioButton rb1 = new JRadioButton ("Male");
      rb1.setMnemonic (KeyEvent.VK_M);
      rb1.setActionCommand ("Male");
      rb1.setSelected (true);

      JRadioButton rb2 = new JRadioButton ("Female");
      rb2.setMnemonic (KeyEvent.VK_F);
      rb2.setActionCommand ("Female");
      rb2.setSelected (true);

      JRadioButton rb3 = new JRadioButton ("Indeterminate");
      rb3.setMnemonic (KeyEvent.VK_I);
      rb3.setActionCommand ("Indeterminate");
      rb3.setSelected (true);

      ButtonGroup bg = new ButtonGroup ();
      bg.add (rb1);
      bg.add (rb2);
      bg.add (rb3);

      JPanel jp = new JPanel ();
      jp.add (rb1);
      jp.add (rb2);
      jp.add (rb3);

      getContentPane ().add (jp);

      pack ();
      setVisible (true);
   }

   public static void main (String [] args)
   {
      new RadioButtonDemo ("RadioButton Demo");
   }
}