如何用双端链表实现队列？

package com.ys.link;

public class QueueLinkedList {

private DoublePointLinkedList dp;

public QueueLinkedList(){
    dp = new DoublePointLinkedList();
}
public void insert(Object data){
    dp.addTail(data);
}

public void delete(){
    dp.deleteHead();
}

public boolean isEmpty(){
    return dp.isEmpty();
}

public int getSize(){
    return dp.getSize();
}

public void display(){
    dp.display();
}

}