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Update java-concurrent-questions-03.md #2773

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hay211 wants to merge 1 commit into Snailclimb:main from hay211:patch-1
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@hay211 hay211 commented Jan 13, 2026 •
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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

 

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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hay211 commented Jan 13, 2026

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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。

@hay211 hay211 deleted the patch-1 branch January 14, 2026 01:51
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hay211 commented Jan 14, 2026

好的,明白了,感谢Guide的回答

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