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问题描述

这两个陈述是否相同?

Thread.sleep(0);
Thread.yield();


推荐答案

不。最明显的区别是 sleep()抛出(已检查) InterruptedException 。在实践中,效果可能几乎相同,但它完全依赖于实现。

No. The most obvious difference is that sleep() throws the (checked) InterruptedException. In practice, the effect may be almost the same, but it's entirely implementation-dependant.

我敢打赌,连续每次进行一百万次会使更长时间睡眠(),因为系统计时器粒度可能经常导致它实际上睡了不可忽视的时间。

I'd wager that doing each a million times in a row would take much longer for sleep(), since system timer granularity probably often causes it to actually sleep for a non-negligible amount of time.

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09-05 18:39
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