JAVA比较日期前后的方法

在java中要比较日期的前后

代码如下

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String beginTimeString="2017-03-24 08:00:00";

String endTimeString="2017-03-27 08:00:00";

String nowtimeString =sdf.format(new Date());
Date beginTimeDate = sdf.parse( activitybeginTimeString );
Date endTimeDate = sdf.parse( activityendTimeString );
Date nowtimeTimeDate = sdf.parse( nowtimeString );
System.out.println("活动开始时间"+beginTimeDate);
System.out.println("活动结束时间"+endTimeDate);
System.out.println("当前时间"+nowtimeTimeDate);
if ( (nowtimeTimeDate.before(activityendTimeDate))&&((nowtimeTimeDate.after(activitybeginTimeDate))) ){
System.out.println("活动期内");}else{
System.out.println("活动期外");
}

判断当前日期是否处于制定日期内