添加用户

public static void main(String[] args) {
long t1 = System.currentTimeMillis(); // 排序前取得当前时间

try {
Thread.currentThread().sleep(3160);
} catch (Exception err) {

}

long t2 = System.currentTimeMillis(); // 排序后取得当前时间

Calendar c = Calendar.getInstance();
c.setTimeInMillis(t2 - t1);

System.out.println("耗时: " + c.get(Calendar.MINUTE) + "分 "
+ c.get(Calendar.SECOND) + "秒 " + c.get(Calendar.MILLISECOND) + " 微秒");
}