/**
 * Node containing an element of a linked list.
 * @author Jeff Raab
 */
public class Node implements Position {

    /** Object stored in this. */
    protected Object element;
    
    /** Node before this in the list containing this. */
    public Node before;
    
    /** Node after this in the list containing this. */
    public Node after;
    
    /** Constructs a new node with no data. */
    public Node() {}

    /**
     * Constructs a new node with the given data.
     * @param anObject object to be stored in the node
     * @param aBefore node that comes before the node
     * @param anAfter node that comes after the node
     */
    public Node(Object anObject, Node aBefore, Node anAfter) {
        element = anObject;
        before = aBefore;
        after = anAfter;
    }
    
    /** Returns the element stored in this. */
    public Object element() {
        return element;
    }
}