【Java】List的三种遍历方法

 1 public void List_Test(){
 2         List<String>list = new ArrayList<String>();
 3         for(int i = 0;i < 10;i++){
 4             list.add("Hey" + i);
 5         }
 6 
 7         //1.
 8         for(String tmp:list){
 9             System.out.println(tmp);
10         }
11         
12         //2.
13         for(int i = 0;i < list.size();i++){
14             list.get(i);
15         }
16         
17         //3.
18         Iterator<String>iter = list.iterator();
19         while(iter.hasNext()){
20             iter.next();
21         }
22     }