public class TestSLL {
    public static void main(String[] args) {

	SLL list = new SLL();
	list.add("D");
	list.add("C");
	list.add("B");
	list.add("A");

	System.out.println("List:  " + list);
	System.out.println("Size:  " + list.size());
	System.out.println("E?     " + list.contains("E"));
	System.out.println("A?     " + list.contains("A"));
	System.out.println("Del A: " + list.remove("A"));
	System.out.println("List:  " + list);
	System.out.print  ("Gone!  "); list.clear(); list.display();
	System.out.println("Empty? " + list.isEmpty());
    }
}

/* Output:
   List:  D C B A
   Size:  4
   E?     false
   A?     true
   Del A: true
   List:  D C B
   Gone!  null
   Empty? true
*/