How to recognize deadlock?

Question

Java

How can I understand if I caught a deadlock? Should some exception be thrown or will the program hang forever?

Answer 1

I suggest to try it in practice: https://www.tutorialspoint.com/java/java_thread_de...

Answer 2

Dump threads using the standard utility from the JDK - jstack.
jstack $PID .
There will obviously be information about the deadlock in the output, if you really have this case.