ＪＡＶＡ３Ｄ ０１ - プログラム倉庫

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

public class ex01
{
  public static void main(String[] args)
  {  
    Frame ff = new Frame("ex01 ボタン");  
    Button bb = new Button("練習");        
    ff.setSize(500, 500);              
    ff.add(bb);                          
    ff.addWindowListener(new FrameListener());
    ff.setVisible(true);              
  }
  
  private static class FrameListener extends WindowAdapter
  {
    public void windowClosing(WindowEvent e)
    {
       System.exit(0);            
    }
  }
}