A comprehensive guide to Java deadlocks covering the four Coffman conditions, code examples using synchronized blocks and ReentrantLock, detection tools (jstack, JConsole, VisualVM, ThreadMXBean), and prevention strategies. Also covers livelock vs deadlock differences, virtual thread pinning risks in JDK 21, and how to use tryLock() with timeouts to avoid indefinite blocking.
Table of contents
Key TakeawaysWhat Is a Deadlock in Java?The Four Coffman Conditions for DeadlockDeadlock in Java Example Using synchronizedDeadlock Example Using ReentrantLockHow to Detect a Deadlock in JavaHow to Prevent Deadlock in JavaDeadlock vs. Livelock: Key DifferencesDeadlock in Java and Project LoomFAQConclusionSort: