Java Practice-It || 16.24 linkedNodes24 || ListNodes, LinkedLists

Problem:
Write the code necessary to convert the following sequence of ListNode objects:

list [7] ... [3] /
Into this sequence of ListNode objects:

list [7] ... [3] [42] /
(In other words, add a new node at the end of the chain with value 42.)

Assume that you are using ListNode class as defined in the textbook:

public class ListNode {
public int data; // data stored in this node
public ListNode next; // a link to the next node in the list

public ListNode() { ... }
public ListNode(int data) { ... }
public ListNode(int data, ListNode next) { ... }
}

Question: