检查两个日期时段是否重叠

Question

• 我有两个日期范围,(start1,end1)::: >> date1 &&(start2,end2)::: >> date2.

• 我想检查两个日期是否已经过了.

• 我的流程图我假设"<> ="运算符对比较有效.

  boolean isOverLaped(Date start1,Date end1,Date start2,Date end2) {
      if (start1>=end2 && end2>=start2 && start2>=end2) {
          return false;
      } else {
          return true;
      }
  }
  

• 任何建议将不胜感激.

Answer 1

You can use Joda-Time for this.

It provides the class Interval which specifies a start and end instants and can check for overlaps with overlaps(Interval).

Something like

DateTime now = DateTime.now();

DateTime start1 = now;
DateTime end1 = now.plusMinutes(1);

DateTime start2 = now.plusSeconds(50);
DateTime end2 = now.plusMinutes(2);

Interval interval = new Interval( start1, end1 );
Interval interval2 = new Interval( start2, end2 );

System.out.println( interval.overlaps( interval2 ) );

prints

true

since the end of the first interval falls between the start and end of the second interval.