import java.util.HashSet;
import java.util.Iterator;

class Person
{
 String name;
 int age;
 
 public Person(String name,int age)
 {
  this.name=name;
  this.age=age;
 }
 public String toString()
 {
  return name+"("+age+"세)";
 }
 public boolean equals(Object obj)
 {
  Person per=(Person)obj;
  if(per.name==name && per.age==age)
    return true;
  else
   return false;
 }
 public int hashCode()
 {
  return name.hashCode()+age%7    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> name.hashcode() 요거
 }
}
public class hashequals {

 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  HashSet<Person> hset=new HashSet<Person>();
  hset.add(new Person("김태희",23));
  hset.add(new Person("김태희",20));
  hset.add(new Person("한예슬",23));
  hset.add(new Person("한예슬",25));
  hset.add(new Person("김태희",23));
  hset.add(new Person("한예슬",23));
  System.out.println("저장된 데이터 수:"+hset.size());
  
  Iterator<Person> itr=hset.iterator();
  while(itr.hasNext())
   System.out.println(itr.next());
 }
 
}

name.hashcode() ??? 요것은 도대체 뭡니까
hashcode 메소드의 반환값이 \'해시값\' 맞습니까?