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(); } } } } |
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:http://www.cnblogs.com/heizai002/p/6862625.html