Java重写equals方法

package com.jckb;

import java.util.HashSet;

public class Test3 {

    
    public static void main(String[] args) {
        m();
    }
    static void m(){
        HashSet<Person> p= new HashSet<Person>();
        p.add(new Person(12, "tom"));
        p.add(new Person(12, "tom"));
        
        
        System.out.println(p);
        System.out.println("--------------------------------------");
        boolean b =( new Person(12, "tom")).equals(new Person(12, "tom"));
        System.out.println(b);
    }
}

class Person{
    private int age;
    private String name;
    public Person(int age, String name) {
        super();
        this.age = age;
        this.name = name;
    }
    
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }


    @Override
    public int hashCode() {
        Person p =(Person) this;
        return p.getName().hashCode()+p.getName().hashCode();
    }


    @Override
    public boolean equals(Object obj) {
        if(obj instanceof Person){
        Person p =(Person)obj;
            return this.name.endsWith(p.name)&&this.age==p.age;
        }
        return super.equals(obj);
    }


    @Override
    public String toString() {
        return name+"---"+age;
    }
}