Hello everyone, in this article, I’ll share how we identified and resolved a Deadlock issue in our Java 21 Virtual Threads application. If you’re ready, sit back and let’s dive into the adventure! As…

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An issue was identified in a Java 21 application utilizing Virtual Threads that caused deadlocks during the generation of Excel reports in the Gulf Local Cargo Invoices Project. The root cause was traced to the use of synchronized code blocks in the HTTP client library, which were incompatible with Virtual Threads. The deadlock issue was resolved by employing the jcmd utility to capture detailed thread dumps and updating the library to use ReentrantLock instead of synchronized blocks.

Java 21 Virtual Threads Deadlock Awareness

First Step in a Frozen Application: Taking a Thread Dump

<p>A Java detective mystery novel. Well done.</p>
