timecount.java

java applet 倒计时有声定时器

/*
 * Created on 2006-3-21
 *
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/**
 * @author 软件一班    李果     20031610108 
 *
 * TODO To change the template for this generated type comment go to
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import java.applet.*;
import java.awt.*;
import java.awt.event.*;
//import java.util.Timer;
import javax.swing.*;
import java.text.NumberFormat;
import java.net.*;
import javax.swing.Timer;

public class TimeCount extends JApplet implements Runnable{

	AudioClip sound ;//播放的声音
	AudioClip sound_enemys;//播放发现敌人的声音
	AudioClip sound_letsgo;//播放开始行动的声音
	AudioClip sound_di;//播放计时的声音
	NumberFormat format;//格式化的时间显示
	Thread timer;//每秒更新一次时间
	JLabel label;//创建一个JLabel来显示时间
	long remaining;//倒数还剩下多少毫秒
	long lastUpdate;//计数最后一次更新的时间
	boolean running;//用于中止线程的标志
	
	public void init(){
		//倒数时间6000毫秒，即六秒钟
		remaining = 6000;
		//初始化JLabel来显示时间
		label = new JLabel();
		//让标签显示出背景色
		label.setOpaque(true);
		//向Applet中添加这个标签
		getContentPane().add(label,BorderLayout.CENTER);
		
		//得到NumberFormat对象，将分钟数和秒数转换为串
		format = NumberFormat.getNumberInstance();
		
		//String soundURL = "D:\Program Files\Eclipse\eclipse\workspace\Time\hks1.wav";
		//sound=getAudioClip("D:\Program Files\Eclipse\eclipse\workspace\Time\hks1.wav");
		//声音路径
		String soundURL = "hks1.wav";
		String soundURL_enemys = "ct_enemys.wav";
		String soundURL_letsgo = "letsgo.wav";
		String soundURL_di = "buttonclickrelease.wav";
		if(soundURL != null)
			sound = getAudioClip(getDocumentBase(),soundURL);
		
		if(soundURL_enemys != null)
			sound_enemys = getAudioClip(getDocumentBase(),soundURL_enemys);
		
		if(soundURL_letsgo != null)
			sound_letsgo = getAudioClip(getDocumentBase(),soundURL_letsgo);
		
		if(soundURL_di != null)
			sound_di = getAudioClip(getDocumentBase(),soundURL_di);
	}
	
	public void start(){
		running = true;//设置标志
		if(timer == null){
			timer = new Thread(this);//如果没有线程，则创建一个
			timer.start();//并启动这个线程
		}
	}
	
	public void run(){
		if(sound_enemys != null)
			sound_enemys.play();
		
		try{Thread.sleep(2000);}
		catch(InterruptedException e){}
		
		if(sound_letsgo != null)
			sound_letsgo.play();
		
		while(running){
			//状态栏提示当前状态
			showStatus("正在倒计时……");
			
			if(sound_di != null)
				sound_di.play();
			
			remaining -= 1000;//减去一秒钟
			//等待1000毫秒后，继续运行
			
			try{Thread.sleep(1000);}
			catch(InterruptedException e){}
			
//			防止时间误设为负值
			if(remaining < 0)
				remaining = 0;
			int minutes = (int)(remaining/60000);
			int seconds = (int)((remaining%60000)/1000);
			label.setText(format.format(minutes)+":"+format.format(seconds));
			
			//完成倒计时后，响铃提示
			if(remaining == 0){
				//状态栏提示程序当前状态
				showStatus("时间到,程序运行结束！");
				
				//如果有声音片断，现在播放
				if(sound != null)
					sound.play();
				
				label.setText("时间到！");
				running = false;
			}			
		}
		
		//得到系统当前时间，单位是毫秒
		//long now = System.currentTimeMillis();
		
		
	}
	
	public void stop(){
		running = false;
	}
}