Java:使用TimeUnit将秒转换为日,小时,分钟和秒

Question

我正在使用TimeStamp类将秒转换为日,小时,分钟,秒.我使用以下代码

public static void calculateTime(long seconds) {
        int day = (int)TimeUnit.SECONDS.toDays(seconds);        
        long hours = TimeUnit.SECONDS.toHours(seconds) - TimeUnit.SECONDS.toHours(TimeUnit.SECONDS.toDays(seconds));
        long minute = TimeUnit.SECONDS.toMinutes(seconds) - TimeUnit.SECONDS.toMinutes(TimeUnit.SECONDS.toHours(seconds));
        long second = TimeUnit.SECONDS.toSeconds(seconds) - TimeUnit.SECONDS.toSeconds(TimeUnit.SECONDS.toMinutes(seconds));

        System.out.println("Day " + day + " Hour " + hours + " Minute " + minute + " Seconds " + second);

    }

但我得不到正确的结果.例如,当我调用此方法时,calculateTime(3600)它给我的结果Day 0 Hour 1 Minute 60 Seconds 3540而不是Day 0 Hour 1 Minute 0 Seconds 0.

我的逻辑有什么问题？请帮我.

Answer 1

应该是这样的

 int day = (int)TimeUnit.SECONDS.toDays(seconds);        
 long hours = TimeUnit.SECONDS.toHours(seconds) - (day *24);
 long minute = TimeUnit.SECONDS.toMinutes(seconds) - (TimeUnit.SECONDS.toHours(seconds)* 60);
 long second = TimeUnit.SECONDS.toSeconds(seconds) - (TimeUnit.SECONDS.toMinutes(seconds) *60);

编辑 说明:

1. 日计算是正确的,不需要解释.
2. TimeUnit.SECONDS.toHours(秒)将为您提供从秒到小时的直接转换,而无需考虑您已计算的天数.减去你已经获得的天数,即每天*24.你现在剩下几个小时了.
3. 分钟和秒钟相同.你需要分别减去已经有的小时和分钟.

Answer 2

您可以这样做只使用TimeUnit:

public static void calculateTime(long seconds) {
    int day = (int) TimeUnit.SECONDS.toDays(seconds);
    long hours = TimeUnit.SECONDS.toHours(seconds) -
                 TimeUnit.DAYS.toHours(day);
    long minute = TimeUnit.SECONDS.toMinutes(seconds) - 
                  TimeUnit.DAYS.toMinutes(day) -
                  TimeUnit.HOURS.toMinutes(hours);
    long second = TimeUnit.SECONDS.toSeconds(seconds) -
                  TimeUnit.DAYS.toSeconds(day) -
                  TimeUnit.HOURS.toSeconds(hours) - 
                  TimeUnit.MINUTES.toSeconds(minute);
    System.out.println("Day " + day + " Hour " + hours + " Minute " + minute + " Seconds " + second);
}

或者稍短但可能不那么直观

public static void calculateTime(long seconds) {
    int day = (int) TimeUnit.SECONDS.toDays(seconds);
    long hours = TimeUnit.SECONDS.toHours(seconds) -
                 TimeUnit.DAYS.toHours(day);
    long minute = TimeUnit.SECONDS.toMinutes(seconds) -
                  TimeUnit.HOURS.toMinutes(TimeUnit.SECONDS.toHours(seconds));
    long second = TimeUnit.SECONDS.toSeconds(seconds) -
                  TimeUnit.MINUTES.toSeconds(TimeUnit.SECONDS.toMinutes(seconds));
    System.out.println("Day " + day + " Hour " + hours + " Minute " + minute + " Seconds " + second);
}

Answer 3

简单方法:

public static void calculateTime(long seconds) {
    long sec = seconds % 60;
    long minutes = seconds % 3600 / 60;
    long hours = seconds % 86400 / 3600;
    long days = seconds / 86400;

    System.out.println("Day " + days + " Hour " + hours + " Minute " + minutes + " Seconds " + sec);
}