Update java-concurrent-questions-03.md #2773
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ScheduledThreadPool 和 SingleThreadScheduledExecutor 也是可以创建任意数量的线程，不是因为DelayedWorkQueue，而且 private static final int INITIAL_CAPACITY = 16;
private RunnableScheduledFuture<?>[] queue =
new RunnableScheduledFuture<?>[INITIAL_CAPACITY];DelayedWorkQueue的默认容量是16
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虽然maximumPoolSize设置得很大，但因为队列无界，永远触发无法创建非核心线程的逻辑。DelayedWorkQueue的最初容量虽小，但却是无界扩容的。 |
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好的，明白了，感谢Guide的回答 |
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ScheduledThreadPool 和 SingleThreadScheduledExecutor 也是可以创建任意数量的线程，不是因为DelayedWorkQueue，而且 默认容量是16