import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class EventQs {

    private Frame f = new Frame("event test");

    private Button ok  = new Button("confired");

    private TextField tf = new TextField();

    public void init(){

        ok.addActionListener(new OkListener());

        f.add(tf);

        f.add(ok, BorderLayout.SOUTH);

        f.pack();

        f.setVisible(true);

    }

    class  OkListener implements ActionListener{

        public void actionPerformed(ActionEvent e){

            System.out.println("button be pressed");

            tf.setText("hello panzidong");

        }

    }

    public static void main(String[] args) {

        new EventQs().init();

    }

}