如何对具有某些特定属性的对象列表进行排序 [英] How to sort a list of objects with some specific property

问题描述

我有一个记录对象

 public Record{
   double simiADD;
 }

我有一个Record对象列表，我想在simiADD上排序。应首先出现simiADD值较小的记录，并且稍后将在排序列表中出现具有更多simiADD值的记录。我想在一个单独的方法中执行此操作，而不是在Record类中实现比较器。

I Have a List of Record objects and I want to Sort on simiADD. Record with less value of simiADD should occur first and record with more value of simiADD should occur later in the sorted list. I wanted to do this operation in a seprate method and not implementing the comparator in Record class.

推荐答案

如果你不想要在Record类中定义一个比较函数：

If you don't want to define a comparison function inside the Record class:

Collections.sort(recordList, new Comparator<Record>() {
        public int compare(Record object1, Record object2) {
            return Double.compare(object1.simiADD, object2.simiADD);
        }
    }
);

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