Java 两次之间的差异（以分钟为单位）
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Difference between two times in minutes
提问by user2704743
I've seen some examples using Joda Time and other methods to work out the difference between two dates in milliseconds, but how can these be applied to just get the difference between two times in minutes? For example, the difference between 2:45pm and 11:00am is 225 minutes.
我已经看到一些示例使用 Joda Time 和其他方法来计算两个日期之间的差异（以毫秒为单位），但是如何应用这些方法来获得两次时间之间的差异（以分钟为单位）？例如，下午 2:45 和上午 11:00 之间的差异是 225 分钟。
采纳答案by dasblinkenlight
You can work out the math by observing that one minute is sixty seconds, one second is one thousand milliseconds, so one minute is 60*1000milliseconds.
你可以通过观察一分钟是六十秒，一秒是一千毫秒，所以一分钟是60*1000毫秒来算出数学。
If you divide milliseconds by 60,000, seconds will be truncated. You should divide the number by 1000 to truncate milliseconds, then take n % 60as the number of seconds and n / 60as the number of minutes:
如果将毫秒除以 60,000，秒将被截断。您应该将数字除以 1000 以截断毫秒，然后n % 60作为秒数和n / 60分钟数：
Date d1 = ...
Date d2 = ...
long diffMs = d1.getTime() - d2.getTime();
long diffSec = diffMs / 1000;
long min = diffSec / 60;
long sec = diffSec % 60;
System.out.println("The difference is "+min+" minutes and "+sec+" seconds.");
回答by NPE
To convert milliseconds to minutes, divide by 60000.
要将毫秒转换为分钟，请除以60000。
回答by Sotirios Delimanolis
With JodaTime, you can do the following to get exact minutes
使用JodaTime，您可以执行以下操作以获取准确的分钟数
public static void main(String[] args) throws Exception { //Read user input into the array
long time = System.currentTimeMillis(); // current time
DateTime time1 = new DateTime(time);
DateTime time2 = new DateTime(time + 120_000); // add 2 minutes for example
Minutes minutes = Minutes.minutesBetween(time1, time2);
System.out.println(minutes.getMinutes()); // prints 2
}
The Minutes.minutesBetween()accepts a ReadableInstantparameter which isn't necessarily a DateTimeobject.
在Minutes.minutesBetween()接受一个ReadableInstant参数，其不一定是一个DateTime对象。
