import java.awt.*;
import java.awt.event.*;
public class abc {
  public static void main(String[] args) {
    MyForm w = new MyForm("abc");
  }
}

class MyForm extends Frame {
  public MyForm(String s) {
    super ( s );
    setLayout(null); //采用空布局
    addWindowListener(new WindowAdapter() { //退出
      public void windowClosing(WindowEvent e) {
        dispose();
        System.exit(0);
      }
    });
    this.setBounds(300, 200, 260, 260); //设置宽高
    setVisible(true); //设置可见

    int n = 5;
    Button[] button = new Button[n * n];
    Panel panel = new Panel();
    panel.setLayout(new GridLayout(n, n));
    panel.setBounds(10, 50, 150, 150);
    add(panel);

    for (int i = 0; i < button.length; i++) {
      button[i] = new Button(""+i);
      panel.add(button[i]);
    }
  }
}