Java implements the countdown function (calculated in seconds by day, hour, minute, second), and java countdown

Java implements the countdown function (calculated in seconds by day, hour, minute, second), and java countdown

Sometimes it is required to achieve such a requirement:

The values of days, hours, minutes, And seconds are separated. The server returns only one timestamp length.

The following is my Implementation Scheme, which aims to reduce object generation and computing workload:

Import java. util. timer; import java. util. timerTask; public class CountDownUtils {private static long day = 0; private static long hour = 0; private static long minute = 0; private static long second = 0; private static boolean dayNotAlready = false; private static boolean hourNotAlready = false; private static boolean minuteNotAlready = false; private static boolean secondNotAlready = false; publi C static void main (String [] args) {long totalSeconds = 60*60*24*34 + 21; initData (totalSeconds); new Timer (). schedule (new TimerTask () {public void run () {if (secondNotAlready) {startCount () ;}else {cancel () ;}, 0, 1000 );} /*** initialization value ** @ param totalSeconds */private static void initData (long totalSeconds) {resetData (); if (totalSeconds> 0) {secondNotAlready = true; second = t OtalSeconds; if (second> = 60) {minuteNotAlready = true; minute = second/60; second = second % 60; if (minute> = 60) {hourNotAlready = true; hour = minute/60; minute = minute % 60; if (hour> 24) {dayNotAlready = true; day = hour/24; hour = hour % 24 ;}}}} system. out. println ("after initial formatting -->" + day + "day" + hour + "hour" + minute + "minute" + second + "second ");} private static void resetData () {day = 0; hour = 0; minute = 0; second = 0; dayNotAlready = false; hourNotAlready = false; minuteNotAlready = false; secondNotAlready = false ;} /*** calculate the change of each value **/public static void startCount () {if (secondNotAlready) {if (second> 0) {second --; if (second = 0 &&! MinuteNotAlready) {secondNotAlready = false ;}} else {if (minuteNotAlready) {if (minute> 0) {minute --; second = 59; if (minute = 0 &&! HourNotAlready) {minuteNotAlready = false ;}} else {if (hourNotAlready) {if (hour> 0) {hour --; minute = 59; second = 59; if (hour = 0 &&! DayNotAlready) {hourNotAlready = false ;}} else {if (dayNotAlready) {day --; hour = 23; minute = 59; second = 59; if (day = 0) {dayNotAlready = false ;}}}}}} System. out. println ("beyond the deadline -->" + day + "day" + hour + "hour" + minute + "minute" + second + "second ");}}

Summary

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