public static int dayOfWeek(Date date) {
		return DateTime.of(date).dayOfWeek();
	}
@Test
	public void dayOfWeekTest() {
		final int dayOfWeek = DateUtil.dayOfWeek(DateUtil.parse("2018-03-07"));
		assertEquals(Calendar.WEDNESDAY, dayOfWeek);
		final Week week = DateUtil.dayOfWeekEnum(DateUtil.parse("2018-03-07"));
		assertEquals(Week.WEDNESDAY, week);
	}