遍历集合的三种方式

 

集合当中遍历的三种方式：

           List<String> list = new ArrayList<String>();

              list.add("a");

              list.add("b");

              list.add("c");

             

              for(int i = 0; i < list.size(); i++)

              {

                     System.out.println(list.get(i));

              }

             

              System.out.println("--------------------------");

             

              for(Iterator<String> iter = list.iterator(); iter.hasNext();)

              {

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

              }

             

              System.out.println("--------------------------");

             

              for(String str : list)

              {

                     System.out.println(str);

              }