java HashSet存储自定义对象

import java.util.HashSet;import java.util.Iterator;public class LinkedListTest {public static void main(String[] args) {HashSet hs = new HashSet();hs.add(new Person1("zhangsan", 12));hs.add(new Person1("lisi", 13));hs.add(new Person1("wangwu", 10));hs.add(new Person1("zhangsan", 12));for(Iterator it = hs.iterator();it.hasNext();) {Person1 p1 = (Person1) it.next(); System.out.println(p1.name + "..." + p1.age);}}}class Person1 {String name;int age;Person1() {}Person1(String name, int gae) {this.name = name;this.age = age;}@Overridepublic int hashCode() {return name.hashCode() + age;}@Overridepublic boolean equals(Object obj) {if(!(obj instanceof Person1)) {return false;}Person1 p1 = (Person1)obj;return name.equals(p1.name) && age==p1.age;}}