ＪＡＶＡ ＥＸ０７ - プログラム倉庫

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

public class ex07
{
  public static void main(String[] args)
  {  
    Frame f = new Frame("ex07");  
    f.setSize(500, 500);                
    f.setLayout(new GridLayout(5, 5));  
    for(int i = 0; i < 25 ; i++)
    {
        f.add(new Button(Integer.toString(i+1)));
    }
    f.setVisible(true);                            
    f.addWindowListener(new WindowAdapter()
      {
        public void windowClosing(WindowEvent e)
        {
          System.exit(0);                  // Frameを破棄する
        }
      });
   }
}