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Java的比较器Comparable和Comparator用法

1.Comparable需要将所需排序的类实现Comparable接口，并实现内部的comparaTo方法，比较数值可用对应包装类的compare（也可以用做差形式），比较字符用String的compareTo自然情况都是从小到大排序，可在前面加个-号2.Comparator调用方法Collecti...

Java://Comparator、Comparable的用法(按照要求将set集合的数据进行排序输出):

import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; //comparator、comparable的用法(按照要求将map集合的键值对进行顺序输出) import java.ut...

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更新时间 2024-04-07 16:27:17

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