Sometimes it is required to achieve such a requirement:
The values of days, hours, minutes and seconds are all separated, and the server only returns one time stamp length.
The following is my implementation plan, striving to reduce object generation and calculation amount:
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; public 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 assignment* * @param totalSeconds */ private static void initData(long totalSeconds) { resetData(); if (totalSeconds > 0) { secondNotAlready = true; second = totalSeconds; 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 changes in 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 (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("It is still up to the deadline->" + day + "day" + hour + "hour" + minute + "minute" + second + "second"); } }Summarize
The above is the Java implementation countdown function introduced by the editor (calculating days, hours, minutes, and seconds from seconds). I hope it will be helpful to everyone. If you have any questions, please leave me a message and the editor will reply to everyone in time. Thank you very much for your support to Wulin.com website!