【java】Vector

 1 package com.tn.collect;
 2 
 3 import java.util.Enumeration;
 4 import java.util.Iterator;
 5 import java.util.Vector;
 6 
 7 public class VectorDemo {
 8     public static void main(String[] args){
 9         Vector<String> v=new Vector<String>();
10         v.add("黄山");
11         v.add("黄河");
12         System.out.println(v);
13         System.out.println(v.size());
14         
15         Iterator<String> iterator=v.iterator();    
16         while(iterator.hasNext()){
17             System.out.println(iterator.next());
18         }
19         System.out.println("----------------------------");
20         //比ArrayList多一种老的遍历：
21         Enumeration<String> e=v.elements();
22         while(e.hasMoreElements()){
23             System.out.println(e.nextElement());
24         }
25         
26         //ArrayList是线程不安全的，Vector是线程安全的。
27     }
28 }