자바 배열 출력의 각가지 형태

import java.util.*;

public class Test {

public static void main(String[] args) {

Vector vc = new Vector();

vc.add("Lee"); vc.add(123); vc.add(56.78); vc.add(false);

Iterator it = vc.iterator();

while(it.hasNext()){

System.out.println(it.next()+ " ");

}

System.out.println("Set과 HashSet확인 - 중복불가 ,순서없음");

Set set = new HashSet();

set.add("superman");

set.add("batman");

set.add("aquaman");

set.add("batman");

set.add(new Integer(33));

set.add("game");

set.add("last");

System.out.println(set);

System.out.println("List와 ArrayList확인 - 중복허용, 순서있음");

List list = new ArrayList();

list.add("batman");

list.add("spiderman");

list.add("game");

list.add("batman");

list.add("game");

System.out.println(list);

System.out.println("HashTable 클래스");

Hashtable table = new Hashtable();

table.put("t1",new Integer(123));

table.put("t2","two");

table.put("t3","three");

table.put("t4","four");

table.put("m1","apple");

Enumeration num = table.keys();

String name = null;

while(num.hasMoreElements() == true){

name = (String)num.nextElement();

System.out.println(name+" : "+table.get(name));

}

}

}

====================출력결과====================

Lee 

123 

56.78 

false 

Set과 HashSet확인 - 중복불가 ,순서없음

[33, last, aquaman, superman, batman, game]

List와 ArrayList확인 - 중복허용, 순서있음

[batman, spiderman, game, batman, game]

HashTable 클래스

m1 : apple

t4 : four

t3 : three

t2 : two

t1 : 123