Custom circular, doubly Linked List Problem

[kdott]

I've got a program that is supposed to mimic a music playlist by implementing a circular, doubly linked list. However, i cant use java's LinkedList, i have to write my own linked list. I have a DblListnode class to keep track of the nodes (show below)

public class DblListnode {
   
    private DblListnode prev;
    private Object data;
    private DblListnode next;

   
    public DblListnode() {
	this(null, null, null);
    }

    public DblListnode(Object d) {
	this(null, d, null);
    }

    public DblListnode(DblListnode p, Object d, DblListnode n) {
        prev = p;
	data = d;
	next = n;
    }

   
    public Object getData() {
        return data;
    }

    public DblListnode getNext() {
        return next;
    }

    public Object getPrev() {
        return prev;
    }

    public void setData(Object ob) {
        data = ob;
    }

    public void setNext(DblListnode n) {
        next = n;
    }

    public void setPrev(DblListnode p) {
        prev = p;
    }
}

my Playlist class is supposed to have a field of type DblListnode that references the node representing the current song. How can i associate these two things together to get my custom circular doubly linked list? (I have a interface called SequenceADT that has methods such as forward() backward() and getCurrent(), but not sure if they are needed here)