Java示例在LinkedList的第一个最后位置插入元素

import java.util.LinkedList;



public class Demo {

   public static final void main(String[] args) {

      LinkedList lList = new LinkedList();

      System.out.println("Number of items in the list: " + lList.size());

      String item1 = "foo";

      String item2 = "bar";

      String item3 = "sai";

      String item4 = "prasad";



      lList.add(item1);

      lList.add(item2);

      lList.addFirst(item3);

      System.out.println(lList);

      lList.addLast(item4);

      System.out.println(lList);

      System.out.println("Number of items in the list: " + lList.size());

   }

}