@Test // 1000000 times: 733 mills. // 1000000 times: 770 mills. // 1000000 times: 746 mills. // // verified public void randomCalendar() { Calendar result = null; int count = 1000000; long beg = System.currentTimeMillis(); for (int i = 0; i < count; i++) { result = CalendarHelper.randomCalendar(); } long end = System.currentTimeMillis(); System.out.println(count + " times: " + (end - beg) + " mills. "); System.out.println(result); }