java通过LinkedList实现堆栈和队列数据结构

 package shb.java.demo3;

 import java.util.LinkedList;

 public class TestLinkedList {

     /**
      * @author shaobn
      * @Describe :利用LinkedList实现队列和堆栈的模型
      * @param args
      * @Time : 2015-8-27 下午10:28:33
      */
     public static void main(String[] args) {
         // TODO Auto-generated method stub
         DoLinkedList dll = new DoLinkedList();
         String []str = {"java","php","C","C++"};
         testAdd(dll, str);
         while(!testEmp(dll)){
             sysMethod(testGet(dll));
         }
         System.out.println("执行完毕");
     }
     //打印信息
     public static void sysMethod(Object obj){

         System.out.println(obj);
     }
     //把数组元素添加到LinkedList中
     public static void testAdd(DoLinkedList dll,String[] str){
         for(String s:str){
             dll.addEle(s);
         }
     }
     //实现取出元素
     public static String testGet(DoLinkedList dll){
         return dll.getEle();
     }
     //判断List中是否为空
     public static boolean testEmp(DoLinkedList dll){
         if(dll.isEmp()){
             return true;
         }else {
             return false;
         }
     }
 }
 class DoLinkedList{
     private LinkedList<String> linkedList;
     public DoLinkedList(){
         this.linkedList = new LinkedList<String>();
     }
     //添加元素
     public void addEle(String str){

         linkedList.add(str);
     }
     //取出元素
     public String getEle(){
         //实现队列
         //return linkedList.removeFirst();
         //实现堆栈
         return linkedList.removeLast();
     }
     //判断是否为空
     public boolean isEmp(){
         return linkedList.isEmpty();

     }
 }

简单的小程序，加上注释了。