在java中显示两个日期之间的时间 [英] Display hours between 2 dates in java

问题描述

我有这个代码，我只需要显示几小时：分：秒，任何帮助？

i have this code, i need show only hours:min:sec, any help?

String var = "1429174464829"; (this is time in System.currentTimeMillis() )
String p = "HH:mm:ss";
SimpleDateFormat f = new SimpleDateFormat(p);
long t = var - System.currentTimeMillis();
String result = f.format(new Date(t));

<

in example String var, is 1 hours higher than System.currentTimeMillis() result problem

编辑：我获得：result = 21:59:00

i obtain: result = 21:59:00

谢谢

推荐答案

有一些时区问题。我们必须使用SimpleDateFormat指定时区。在将系统时区的时差添加到标准UTC时区后给出结果。默认情况下，需要您的本地系统时区。

There is some time zone issue. we have to specify time zone with SimpleDateFormat. It gives result after adding time difference of your system time zone with standard UTC time zone. By default it takes your local system time zone.

String var = "1429174464829"; (this is time in System.currentTimeMillis() )
String p = "HH:mm:ss";
SimpleDateFormat f = new SimpleDateFormat(p);
f.setTimeZone(TimeZone.getTimeZone("UTC"));

long t = long.parseLong(var) - System.currentTimeMillis();
String result = f.format(new Date(t));

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