Collections类sort方法的用法

用Collections类sort方法排序时，需要实现Comparator接口的compare方法

首先新建类ComparatorCategoryDetail实现Comparator<Object>

public class ComparatorCategoryDetail implements Comparator<Object>{ public int compare(Object o1, Object o2) { CreditCategoryDetail creditCategory0 = (CreditCategoryDetail)o1; CreditCategoryDetail creditCategory1 = (CreditCategoryDetail)o2; return creditCategory0.getSequence()-creditCategory1.getSequence(); } } 

然后再用到排序的地方写：

ComparatorCategory comparatorCategory = new ComparatorCategory(); Collections.sort(list, comparatorCategory); 

list为要排序的集合