package com.coding.basic; public class StackTest { private LinkedListTest list = new LinkedListTest(); public void push(Object o){ list.add(o); } public Object pop(){ Object obj = list.removeLast(); return obj; } public Object peek(){ Object obj = list.get(0); return obj; } public boolean isEmpty(){ int size = list.size(); if(size==0){ return true; }else{ return false; } } public int size(){ int size = list.size(); return size; } }