Java中List接口用法简介

import java.util.List;
import java.util.LinkedList;
import java.util.ArrayList;

public class ListTest_1{
 public static void main(String[] args){

  System.out.println("The class is to test java.util.List; ");
  List li=new LinkedList();
  //List li=new ArrayList();
  li.add("a");
  li.add("b");
  li.add("c");
  li.add("d");
  li.add("e");
  li.add("f");
  li.add(1,"1");
  //li.add(9,"2");该写法错误，不存在第9个位置
  //取得元素总个数
  System.out.println("The size of element is: "+li.size());
  //取得第一个元素
  System.out.println("The first element is: "+li.get(0)+" ");

  System.out.println("All of the element is:");
  for(int i=0;i<li.size();i++){
   System.out.println("Element "+i+": "+li.get(i));
  }

 }
/*
运行结果
The class is to test java.util.List;

The size of element is: 7
The first element is: a

All of the element is:
Element 0: a
Element 1: 1
Element 2: b
Element 3: c
Element 4: d
Element 5: e
Element 6: f
*/
}

 

 

转载自：http://www.lession.net/blog/466.html