Use the following file:

AddTester.java

/**
   A tester program for a revised version of the LinkedList class.
*/
public class AddTester
{  
   public static void main(String[] args)
   {  
      LinkedList names = new LinkedList();
      
      names.addFirst("Tom");
      names.addFirst("Harry");
      names.addFirst("Dick");

      names.add("Romeo");
      printList(names);
      System.out.println("Expected: Dick Harry Tom Romeo");

      // remove last element and check that add still works
      ListIterator iterator = names.listIterator();
      while (iterator.hasNext()) iterator.next();
      iterator.remove();
      names.add("Juliet");
      printList(names);
      System.out.println("Expected: Dick Harry Tom Juliet");

      iterator = names.listIterator();
      // add after last element and check that add still works
      while (iterator.hasNext()) iterator.next();
      iterator.add("Emily");
      names.add("Charlotte");
      printList(names);
      System.out.println("Expected: Dick Harry Tom Juliet Emily Charlotte");

      // remove everything and check that add still works
      while (names.listIterator().hasNext())
         names.removeFirst();
      names.add("Nina");
      printList(names);
      System.out.println("Expected: Nina");

      names.removeFirst();
      names.addFirst("Adam");
      names.add("Eve");
      printList(names);
      System.out.println("Expected: Adam Eve");
   }
   
   private static void printList(LinkedList list)
   {
      ListIterator iterator = list.listIterator();
      while (iterator.hasNext())
      {
         System.out.print(iterator.next() + " ");
      }
      System.out.println();
   }
}