写完js倒计时,突然想用java实现倒计时,写了三种实现方式
一:设置时长的倒计时;
二:设置时间戳的倒计时;
三:使用java.util.Timer类实现的时间戳倒计时
代码如下:
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package timer;
import java.util.Calendar;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
/**
* java演示倒计时
*
*/
public class TimeTest {
public static int time = 60 * 60 * 60 ;
public static Calendar c;
public static long endTime;
public static Date date;
public static long startTime;
public static long midTime;
public static void main(String[] args) {
c = Calendar.getInstance();
c.set( 2017 , 4 , 17 , 0 , 0 , 0 ); // 注意月份的设置,0-11表示1-12月
// c.set(Calendar.YEAR, 2017);
// c.set(Calendar.MONTH, 4);
// c.set(Calendar.DAY_OF_MONTH, 17);
// c.set(Calendar.HOUR_OF_DAY, 0);
// c.set(Calendar.MINUTE, 0);
// c.set(Calendar.SECOND, 0);
endTime = c.getTimeInMillis();
date = new Date();
startTime = date.getTime();
midTime = (endTime - startTime) / 1000 ;
// time1();//方式一
time2(); // 方式二
// time3();//方式三
}
/**
* 方式三: 使用java.util.Timer类进行倒计时
*/
private static void time3() {
Timer timer = new Timer();
timer.schedule( new TimerTask() {
public void run() {
midTime--;
long hh = midTime / 60 / 60 % 60 ;
long mm = midTime / 60 % 60 ;
long ss = midTime % 60 ;
System.out.println( "还剩" + hh + "小时" + mm + "分钟" + ss + "秒" );
}
}, 0 , 1000 );
}
/**
* 方式二: 设定时间戳,倒计时
*/
private static void time2() {
while (midTime > 0 ) {
midTime--;
long hh = midTime / 60 / 60 % 60 ;
long mm = midTime / 60 % 60 ;
long ss = midTime % 60 ;
System.out.println( "还剩" + hh + "小时" + mm + "分钟" + ss + "秒" );
try {
Thread.sleep( 1000 );
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
/**
* 方式一: 给定时长倒计时
*/
private static void time1() {
while (time > 0 ) {
time--;
try {
Thread.sleep( 1000 );
int hh = time / 60 / 60 % 60 ;
int mm = time / 60 % 60 ;
int ss = time % 60 ;
System.out.println( "还剩" + hh + "小时" + mm + "分钟" + ss + "秒" );
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
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运行结果:
time1()结果:
time2()结果:
time3()结果:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://www.cnblogs.com/heizai002/p/6862625.html