// maintain pointer to first node and remove/add from front.

public class LinkedStackOfStrings {

private Node first=null;//inner class variables as stack

// public LinkedStackOfStrings(){

// Node n=new Node();

// System.out.println(n.item+"--");

// }

//inner class

//should not have static members

private class Node{

String item;//instance variables have a default value

Node next; //object

public String toString(){

return item ;

}

}

public boolean isEmpty(){

return first==null;

}

public void push(String item){

Node oldfirst=first;

// System.out.println(first);

first=new Node();

first.item=item;

first.next=oldfirst;

System.out.println(first.item);

System.out.println(first.next);

// System.out.println(first + "===========");

}

// public String pop(){

// String item=first.item;

// first=first.next;

// return item;

// }

public static void main(String[] args ){

LinkedStackOfStrings l=new LinkedStackOfStrings();

// System.out.println(l.first);

// System.out.println("====");

String s="hello";

l.push(s);

String sa="hello2";

l.push(sa);

String sab="hello3";

l.push(sab);

}

}