import java.awt.*;
import java.awt.event.*;
public class mexit implements ActionListener{
Frame fs        = new Frame("test of button");
Button bexit     = new Button("Exit");

public static void main(String args[]) {
mexit  s = new mexit();
s.init();
}

public void init() {
fs.setSize(650,520);    // Size Frame
fs.setLayout(null);
bexit.setBounds(150,350,325,70);
fs.add(bexit);
bexit.addActionListener(this);
fs.show();
}

public void actionPerformed(ActionEvent a) {
  if(a.getSource()==bexit) { System.exit(0);  }
}

}