【java编程】Collection类之LinkedList实现队列，堆栈

import java.util.*;
class LinkedListDemo
{
public static void main(String[] args)
{
toQueue tq = new toQueue();
tq.myAdd("java01");
tq.myAdd("java02");
tq.myAdd("java03");
tq.myAdd("java04");
while(!tq.isNull())
{
System.out.println(tq.myGet());
}
}
}
class toQueue//对列，先进先出
{
private LinkedList link;
toQueue()
{
link=new LinkedList();
}
public void myAdd(Object obj)
{
link.addFirst(obj);
}
public Object myGet()
{
return link.removeLast();//改成removeFirst()为堆栈
}
public Boolean isNull()
{
return link.isEmpty();
}
}