JConsole and Java VisualVM make it easy to identify the threads involved in deadlock. However, when a command line tool is preferred over a GUI-based tool, jstack is an obvious choice.

In this second article in the Java 101 "Understanding Java threads" series, Jeff ... And neither thread can release the lock it holds because each thread is waiting. Each thread deadlocks, ...

Avoiding deadlocks. A deadlock occurs when two or more threads are blocked forever, each waiting for the other to release a lock. To avoid deadlocks, ensure that locks are acquired in a consistent ...