javase-常用三种遍历方法

Posted 2020-08-09

javase-常用三种遍历方法

 1 import java.util.ArrayList;
 2 import java.util.Iterator;
 3 import java.util.List;
 4 public class Bianli {
 5     public static void main(String[] args) {
 6         List<String> list = new ArrayList<String>();
 7         list.add("add");
 8         list.add("bdd");
 9         list.add("cdd");
10 //        三种遍历方式 for();for()增强;iterator
11         for (int i = 0; i < list.size(); i++) {
12             String s = list.get(i);
13             System.out.println(s);
14         }
15         for (String string : list) {
16             System.out.println(string);
17         }
18         Iterator<String> iterator = list.iterator();
19         while(iterator.hasNext()){
20             System.out.println(iterator.next());
21         }
22     }
23 }