Stack Linked List

Stack Linked List
1. StackLinkedListImpl.java

 package com.nrs.ds.basic;  
 public class StackLinkedListImpl<T> {  
      NodeLL top;  
      public StackLinkedListImpl(){  
           top = null;  
      }  
      public void push(Object value){  
           NodeLL newNode= new NodeLL(value, null);  
           if(top == null){  
                top = newNode;  
           }else{  
                newNode.next = top;  
                top = newNode;  
           }  
      }  
      public T pop(){  
           if(top == null){  
                System.out.println("Stack is empty");  
                return null;  
           }  
           T value = (T) top.value;  
           top = top.next;  
           return value;  
      }  
 }
2. Test
 package com.nrs.ds.basic;  
 public class StackLLTest {  
      public static void main(String[] args) {  
           StackLinkedListImpl<String> sl = new StackLinkedListImpl<String>();  
           sl.pop();  
           sl.push("Ramu");  
           sl.push("Faheem");  
           sl.push("Naresh");  
           System.out.println(sl.pop());  
      }  
 }
Output:

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