Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions. Programmers frequently need to ...

Comparable and comparator both are an interface that can be used to sort the elements of the collection. Comparator interface belongs to java.util package while comparable belongs to java.lang package ...

Comparable是排序接口；若一个类实现了Comparable接口，就意味着“该类支持排序”。可以使用Arrays.sort()对改类进行排序 Comparator也是一个比较器，但是属于挽救设计的一种，一般来说尽量减少。