The PriorityQueue class essentially maintains an ordered list.

priorityqueue类实质上维护了一个有序列表。

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Because LinkedList isn't new, let's look at the new PriorityQueue class.

因为LinkedList不是新事物，所以我们来看一下新的priorityqueue类。

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In this article, I'll look at three other changes: the updated Arrays and Collections classes and the new Queue interface, with its PriorityQueue implementation.

在本文中，我将研究其他三个变化：更新过的Arrays和collections类、新的Queue接口以及它的PriorityQueue实现。

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Changing LinkedList in Listing 2 to PriorityQueue will result in Four being printed out instead of One, as Four comes first alphabetically — the natural ordering of strings.

将清单2中的LinkedList改变为PriorityQueue将会打印出Four而不是One，因为按字母排列——字符串的天然顺序——Four是第一个。

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And, instead of creating your own subclasses, you can use one of the several built-in implementations, two of which aren't blocking queues: PriorityQueue and ConcurrentLinkedQueue.

而且，不必创建自己的子类，可以使用几个内置的实现，其中两个是不阻塞队列：PriorityQueue和ConcurrentLinked Queue。

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And, instead of creating your own subclasses, you can use one of the several built-in implementations, two of which aren't blocking queues: PriorityQueue and ConcurrentLinkedQueue.

而且，不必创建自己的子类，可以使用几个内置的实现，其中两个是不阻塞队列：PriorityQueue和ConcurrentLinked Queue。

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