代码实现模拟进栈出栈

package com.loaderman.list;

import java.util.LinkedList;

public class Stack {
	private LinkedList list = new LinkedList();
	
	/*
	 * 模拟进栈方法
	 */
	public void in(Object obj) {
		list.addLast(obj);
	}
	/*
	 * 模拟出栈
	 */
	public Object out() {
		return list.removeLast();
	}
	/*
	 * 模拟栈结构是否为空
	 */
	public boolean isEmpty() {
		return list.isEmpty();
	}
}