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

	// Bypass "Outer" class:
	ListNode list1 = new ListNode("A",null);
	System.out.println(list1);

	// Create everything with constructors:
	ListNode list2 = new ListNode("A", 
			     new ListNode("B",
				 new ListNode("C",null)));
	System.out.println(list2);

	// Incremental:
	ListNode n1,n2,n3,n4;
	n4 = new ListNode("D",null); // tail
	n3 = new ListNode("C",n4);
	n2 = new ListNode("B",n3);
	n1 = new ListNode("A",n2);   // head
	System.out.println(n1);

	// Setters:
	ListNode head = new ListNode("A",null);
	head.setNext(new ListNode("B",null));
	head.getNext().setNext(new ListNode("C",null));
	head.getNext().getNext().setNext(new ListNode("D",null));
	System.out.println(head);
		
    }
}


/* Output:
   A
   A B C
   A B C D
   A B C D
*/