//  Job: Jay's Own Browser, a web browser written in Java by Jay Skeer
//  Copyright (C) 1996 Jay Skeer, Jay Prime Positive
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//

import OneWayLinkedList;
import EmptyListException;
import HeaderOneWayLinkedList;
public class LinkedQueue extends HeaderOneWayLinkedList {
    public LinkedQueue() {
        super();
    }

    public Object peek() throws EmptyListException {
	return super.firstItem();
    }

    public void push(Object item) {
        OneWayLinkedList ll= new OneWayLinkedList(item);
	addBeg(ll);
    }

    public void enqueue(Object item) {
        OneWayLinkedList ll= new OneWayLinkedList(item);
	addEnd(ll);
    }

    public Object dequeue() throws EmptyListException {
        Object rv= peek();
	removeBeg();
	return rv;
    }
}