import java.awt.*;
import java.awt.event.*;
public class GraphicsC7 extends Frame{
public static void main(String ar[]){
Frame f=new GraphicsC7();
f.setTitle("Buttonのレイアウト（絶対位置指定）");
f.setSize(640,400);
f.setBackground(Color.cyan);
f.setVisible(true);
}
public GraphicsC7{
setLayout(null);
Botton b1=new Button("あ");
b1.setBounds(20,50,100,30);
add(b1);

addWindowListener(new WinAdapter());
}
class WinAdapter extends WindowAdapter{
public void windowClosing(WindowEvent we) {System.exit(0);}
}
}