Single linked adding element help

Question

i just started working with singley linked lists and i am having trouble figuring out how to add an element.
here is what i have so far
public class LinkedIntList implements IntList {
     protected class Node {
          protected int data;
          protected Node next;
          protected Node() {
               data = 0;
               next = null;
     protected Node head;
     protected int size;
     public void add(int element)
          // i can't figure out how to add an element to the list...
}     

Answer 1

A simple add() method in a singly linked list class will add a Node to the last Node in the chain. So the linked list class needs to keep track of the last Node--just like it keeps track of the first Node.
Adding a node will simply require that you assign the new Node to the last Node's next member. Then you set the linked list's last variable equal to the new node.
Note that you could implement the add method by starting at the head and using the Node's getNext() method to obtain the object stored in the Node's next variable. That will be the next Node in the chain, and then you can use getNext() on that Node to get its next variable, etc., until you finally come upon a Node whose next member is equal to null. Then you add the new Node to the Node whose next variable is equal to null.