Java中计算两个时间差(精确到毫秒)

SimpleDateFormat dfs = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");

long between = 0;

try {

java.util.Date begin = dfs.parse("2009-07-10 10:22:21.214");

java.util.Date end = dfs.parse("2009-07-20 11:24:49.145");

between = (end.getTime() - begin.getTime());// 得到两者的毫秒数

} catch (Exception ex) {

ex.printStackTrace();

}

long day = between / (24 * 60 * 60 * 1000);

long hour = (between / (60 * 60 * 1000) - day * 24);

long min = ((between / (60 * 1000)) - day * 24 * 60 - hour * 60);

long s = (between / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);

long ms = (between - day * 24 * 60 * 60 * 1000 - hour * 60 * 60 * 1000

- min * 60 * 1000 - s * 1000);

System.out.println(day + "天" + hour + "小时" + min + "分" + s + "秒" + ms

+ "毫秒");