Queue.java

package com.leaning.code;

public class Queue {

	private LinkedList list = new LinkedList();
	
	public void enQueue(Object o) {
		list.add(o);
	}

	public Object deQueue() {
		return list.removeFirst();
	}
	
	public boolean isEmpty(){
		return list.size() == 0;
	}
	
	public int size(){
		return list.size();
	}
}