package com.coding.basic;
public class Queue {
private LinkedList elementData = new LinkedList();
public void enQueue(Object o) {
elementData.add(o);
}
public Object deQueue() {
if (size() == 0) {
return null;
}
return elementData.removeFirst();
}
public boolean isEmpty() {
return elementData.size() == 0;
}
public int size() {
return elementData.size();
}
}