code: public boolean isIn(Date beginDate, Date endDate) {
  		long beginMills = beginDate.getTime();
  		long endMills = endDate.getTime();
  		long thisMills = this.getTime();
  
  		return thisMills >= Math.min(beginMills, endMills) && thisMills <= Math.max(beginMills, endMills);
  	}
docs: 当前日期是否在日期指定范围内<br>
  起始日期和结束日期可以互换
  
  @param beginDate 起始日期
  @param endDate 结束日期
  @return 是否在范围内
  @since 3.0.8