小编use*_*987的帖子

我一直在制作倒计时节目,我想出了这个.

package main;

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;

import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;

public class Gatoo extends JFrame implements ActionListener {
    private int sec, min, secTot, since = 999;
    private long lastTime;

    private JTextField mm = new JTextField(2), ss = new JTextField(2);
    private JLabel minLab = new JLabel("Minutes:"), secLab = new JLabel(
            "Seconds:");
    private JButton start = new …