clocktest.java

Java程序设计技巧与开发实例附书源代码。

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

public class ClockTest
        extends Applet
        implements ActionListener {
    private Button start = new Button("Start");
    private Button stop = new Button("Stop");
    private Clock clock = new Clock();

    public void init() {
        setLayout(new FlowLayout());
        add(start);
        start.addActionListener(this);
        add(stop);
        stop.addActionListener(this);
        add(clock);
    }

    public void start() {
        clock.start();
    }

    public void stop() {
        clock.stop();
    }

    public void actionPerformed(ActionEvent ae) {
        if (ae.getSource() == stop) {
            clock.stop();
        }
        else if (ae.getSource() == start) {
            clock.start();
        }
    }
}