Why Am I Getting an 'IllegalMonitorStateException' When Using Thread.wait() in Java?-javaTutorial-php.cn

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Why Am I Getting an 'IllegalMonitorStateException' When Using Thread.wait() in Java?

Mary-Kate Olsen

Dec 13, 2024 am 08:01 AM

Why Am I Getting an

"IllegalMonitorStateException" Error: Troubleshooting Wait() in Java Multithreading

When utilizing multi-threading in Java, encountering an "IllegalMonitorStateException" while calling Thread.wait() indicates an issue with synchronized access to resources.

To resolve this, ensure that the thread invoking wait() is within a synchronized block of the object it intends to wait on. This synchronized block ensures exclusive access to the object, allowing the thread to wait effectively and avoid the exception.

Additionally, consider exploring Java's concurrency packages as an alternative to the traditional threading packages. These modern libraries provide a safer and more convenient approach to multithreaded programming.

For instance, Object.wait() method explicitly requires a synchronized block to work correctly. Using the newer concurrency packages may simplify this process by introducing more intuitive constructs for synchronization and thread communication.

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