java - 线程调度-notify调用后线程如何获取锁

Question

我对以下场景中线程如何获取锁有疑问，

有 3 个线程。

*Thread-1 获取锁并调用对象 1 的 wait 方法

*Thread-2 获取锁并调用对象 1 的 wait 方法

*Thread-3获取锁并调用对象1的notify方法

现在JVM是如何唤醒线程的。 Thread-1 获取监视器对象上的锁还是 Thread-2 获取锁？请详细说明原因。

假设所有线程具有相同的优先级。

谢谢

Answer 1

您好，请参阅 javadocs for the jdk 8 中通知方法的文档。状态:

Wakes up a single thread that is waiting on this object's monitor. If any threads are waiting on this object, one of them is chosen to be awakened. The choice is arbitrary and occurs at the discretion of the implementation. A thread waits on an object's monitor by calling one of the wait methods.