java判断两个时间段是否有重叠 java判断时间在两个时间内

public static boolean isEffectiveDate(Date nowTime, Date startTime, Date endTime) {
	if (nowTime.getTime() == startTime.getTime()
			|| nowTime.getTime() == endTime.getTime()) {
		return true;
	}

	Calendar date = Calendar.getInstance();
	date.setTime(nowTime);

	Calendar begin = Calendar.getInstance();
	begin.setTime(startTime);

	Calendar end = Calendar.getInstance();
	end.setTime(endTime);

	if (date.after(begin) && date.before(end)) {
		return true;
	} else {
		return false;
	}
}