Java中实现list显示的三种方法

来源：互联网发布：皇室战争法师数据编辑：程序博客网时间：2024/04/29 12:49

import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;

public class TestList {
private List list = new ArrayList();

     private void initializelist() {
         for (int i = 1; i < 5; i++) {
             list.add("111");
         }
     }

     private void showIterator() {
         for (Iterator it = list.iterator(); it.hasNext();) {
             String str = (String) it.next();
             System.out.println(str);
         }
     }

     private void showlistwhile() {
         Iterator it = list.iterator();
         while (it.hasNext()) {
             String str = (String) it.next();
             System.out.println(str);
         }
     }

     private void showlistsize() {
         for (int i = 0; i < list.size(); i++) {
             String str = list.get(i).toString();
             System.out.println(str);
         }
     }

     public static void main(String[] args) {
         TestList testlist = new TestList();
         testlist.initializelist();
//         testlist.showIterator();
//         testlist.showlistlength();
         testlist.showlistwhile();
     }
}