HashSet - Set

HashSet - Set

import java.util.Date;

import java.util.HashSet;

import java.util.Iterator;

public class SetTest {

public static void main(String[] args) {

// 순서가 없고 ,중복이 허용안됨.

HashSet set = new HashSet();

set.add("홍길동");

set.add(20);

set.add(78.3);

set.add( new Date());

set.add("홍길동");

set.add(20);

set.add(78.3);

set.add( new Date());

//출력

System.out.println(set.toString());

//Iterator

Iterator ite = set.iterator();

while(ite.hasNext()){

System.out.println(ite.next());

}

}//end main

}//end class