Java 集合 将LinkedList添加到LinkedList的前面

将元素添加到链表的开始（头部）的程序。

程序

import java.util.LinkedList;class LinkedListExample {  public static void main(String[] args) {     // create a LinkedList     LinkedList<String> list = new LinkedList<String>();     // Add elements     list.add("AA");     list.add("BB");     list.add("CC");     list.add("DD");     // Display List element     System.out.println("LinkedList Elements:"+list);     // Adding element to front of LinkedList     /* public boolean offerFirst(E e): Inserts the       * specified element at the front of this list.      */     list.offerFirst("NEW Element");     // Displaying List after adding element     System.out.println("LinkedList After Addition:"+list);  }}

输出：

LinkedList Elements:[AA, BB, CC, DD]LinkedList After Addition:[NEW Element, AA, BB, CC, DD]