import java.util.Comparator; public class People implements Comparator { private int id; private String info; private double price; public People(int newid, ... ... <看更多>

* Java Collections Framework</a>. *. * @param <T> the type of objects that may be compared by this comparator. ... <看更多>

Comparator 与Comparable 比较器，一般用于排序的时候。即如果某个没有实现Comp. ... <看更多>