【Java】List的三种遍历方法

 public void List_Test(){
         List<String>list = new ArrayList<String>();
         for(int i = 0;i < 10;i++){
             list.add("Hey" + i);
         }

         //1.
         for(String tmp:list){
             System.out.println(tmp);
         }

         //2.
         for(int i = 0;i < list.size();i++){
             list.get(i);
         }

         //3.
         Iterator<String>iter = list.iterator();
         while(iter.hasNext()){
             iter.next();
         }
     }