public class List  // Class to hold reference to first node in the list 
{    
      private Node head;    // only one instance variable   

      public List ( )   // constructor; sets up an empty list 
             {    head = null;   }
             
       public void addToEnd(String itemToAdd)
       {   Node temp = new Node(itemToAdd);
           Node curr;  // needed to traverse the list

           if (head == null)   // if the list is empty
                head = temp;
           else   //the list is not empty
           {    curr = head;     // set curr to the beginning of the list
                while (curr.next != null)  // while not at the end of the list
                      curr = curr.next;      
               curr.next = temp;   } 
      }  // end addToEnd   
      
     //other methods go here    
      public String toString()		
	{	String temp = "";
		Node curr = head;		
		while(curr.next != null)
		{   temp = temp + curr.item + "\n";
		    curr = curr.next;
		 }
		return  temp;
	}


      private class Node       // inner class
        {
      private String item;       // instance variables 
      private Node next;

      public Node(String i)    // constructor                                                             
             {       item = i;
              next = null;  }
         }   // end class Node
     } // end class List