两个时间段时间差

String hours = getTimeInterval(new Date(),work.getStartTime());

 public static String getTimeInterval(Date currentTime, Date firstTime) {

DecimalFormat decimalFormat = new DecimalFormat("00");

long diff = currentTime.getTime() - firstTime.getTime();//得到的差值

long hours = diff / (1000 * 60 * 60); //获取时

long minutes = (diff - hours * (1000 * 60 * 60)) / (1000 * 60); //获取分钟

long s = (diff / 1000 - hours * 60 * 60 - minutes * 60);//获取秒

String countTime = "" + decimalFormat.format(hours) + ":" + decimalFormat.format(minutes) + ":" + decimalFormat.format(s);

return countTime;

}