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。