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:https://www.cnblogs.com/heizai002/p/6862625.html