Java Programming

My goal is to create a singly linked list that holds integer data. Ive read the chapter from my cs book on it twice and am still a little lost because of the way they designed the example so Im taking it slow. The first thing is the Node Class:

 
public class Node
{ 
    int number; 
    Node next; 

    public Node()
    { 
        number = null; 
        next = null; 
    } 

    public Node (int number, Node next)
    { 
        this.number = number; 
        this.next = next; 
    } 

    public String toString()
    { 
        return number; 
    } 
}

Does this look ok? Do I need a toString or will the LinkedList class that I create take care of that? Thanks in advance.