PLEASE SOLVE THIS JAVA PROGRAMMING QUESTION.

public class SinglyLinked f /**Defines a node class. * static class Node 1 Object element; Node next; public Node (Object elmt, Node nxt) f element emt ; next nxt; II1IIIIVIRIAVT11UUAIAVIIII111 // YOU MUST COMPLETE THE BODY OF THE LENGTH METHOD * Returns the length of the pointer chain; that is, the number of *nodes accessible from n. public static int length (Node n) { return -1; /**Provides an example call to length */ public static void main(String[ args) Node n new Node (2, new Node (4, new Node (6, null))); System.out.println(length(n)); /7 prints 3