如何计算两个日期之间的差异 [英] How can I calculate the difference between two dates

问题描述

可能重复：

如何用Java计算某人的年龄？

我有两个日期，例如19/03/1950和18/04/2011。我如何计算它们之间的差异以获得该人的年龄？我是否必须继续乘以获得小时或秒等？

I have two dates eg 19/03/1950 and 18/04/2011. how can i calculate the difference between them to get the person's age? do I have to keep multiplying to get the hours or seconds etc?

推荐答案

String date1 = "26/02/2011";
String date2 = "27/02/2011";
String format = "dd/MM/yyyy";
SimpleDateFormat sdf = new SimpleDateFormat(format);
Date dateObj1 = sdf.parse(date1);
Date dateObj2 = sdf.parse(date2);
long diff = dateObj2.getTime() - dateObj1.getTime();

int diffDays =  (int) (diff / (24* 1000 * 60 * 60));

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