Problem with LinkedList and Sets

Question

So I am trying to generate a set using LinkedList. Here is my code: public class MyLLSet implements MySet {
    private Node head;
    protected int MAX_ELEMENTS;
    public MyLLSet(){
        head = null;
    public MyLLSet(int n){
        MAX_ELEMENTS = n;
        Node p = head;
        int count = 0;
        Random randomGenerator = new Random();
        while (count < n){
            int randomInt = randomGenerator.nextInt(6);
            if(this.head == null){
                p = new Node(randomInt, null);
                System.out.println(p.Element);
                p = p.next;
            else if(!this.isIn(randomInt)){
                p = new Node(randomInt, null);
                //System.out.println(p.Element);
                p = p.next;
            else {
                count--;
            count++;
    public boolean isIn(int v){
        Node p = head;
        System.out.println(v);
        boolean statement = false;
            System.out.println(p.Element);
        while(p!=null){
            if (p.Element == v){
                statement = true;
                break;
            p = p.next;
        return statement;
    }and my node code: public class Node {
    Integer Element;
    Node next;
    public Node(Integer data){
     this( data, null );
    public Node(Integer data, Node n){
     Element = data;
     next = n;
}the problem I am having is adding my randomInt to a node and keeping it there. Then I am trying to send the value to the isIn() method to check if it is already in the set. If not it will add it. When I try to create a set I just get a blank set. Any help would be much appreciated.
Thanks!
ps. there are some print() statements in there just for debugging.

Answer 1

Sorry I forgot to add my interface:
public interface MySet{
    public boolean isIn(int v);
    public void add(int v);
    //public void remove(int v);
    //public MySet union(MySet s);
    //public MySet intersect(MySet s);
    //public MySet difference(MySet s);
    public int size();
    public void printSet();
}