import sun.invoke.empty.Empty;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.Set;

public class SelfClass {

public static void main(String[] args){

HashMap<Person,String> mymap=new HashMap<Person,String>();

mymap.put(new Person("N0lan",99),"boy");

mymap.put(new Person("zAD",99),"GIR");

Set<Map.Entry<Person,String>> duixiang=mymap.entrySet();

Iterator<Map.Entry<Person, String>> it = duixiang.iterator();

while(it.hasNext()){

Map.Entry<Person,String> next=it.next();

Person key= next.getKey();

String value = next.getValue();

System.out.println(key + " = " + value);

}

}

}

class Person{

private String name;

private int age;

Person(){

}

public Person(String name,int age){

this.name=name;

this.age=age;

}

public String getName(){

return name;

}

public void Setname(String name){

this.name=name;

}

@Override

public int hashCode() {

return this.name.hashCode() + age * 37;

}

@Override

public boolean equals(Object obj) {

if (obj instanceof Person) {

Person p = (Person) obj;

return this.name.equals(p.name) && this.age == p.age;

} else {

return false;

}

}

@Override

public String toString() {

return "Person@name:" + this.name + " age:" + this.age;

}

}