复写hashCode()方法，和equasl()方法

????package collection.list;

import java.util.HashSet;
import java.util.Iterator; 
/** 
* 自定义类，判断：姓名和年龄相同即为相同， 
* 复写hashCode()方法，和equasl()方法， 
* 先判断hashCode()值是否相同，相同的话在判断equals()方法 
* @author zjw 
* 
*/ 
public class HashSet_qu_duixiang {
public staticvoid main(String[] args) {
HashSet hs=new HashSet(); 
hs.add(new Person1("a",11));
hs.add(new Person1("b",12));
hs.add(new Person1("b",12));
// hs.add(new Person1("c",13)); 
// hs.add(new Person1("d",14));
// hs.add(new Person1("e",15)); 
// hs.add(new Person1("f",16));
Iterator iter=hs.iterator(); 
while(iter.hasNext()){ 
Person1 pp=(Person1) iter.next(); 
System.out.println(pp.getName()+"------"+pp.getAge());
} 
} 
} 

class Person1{