How to detect deadlock ? Timeout in synchronized block?

Question

I’m debugging a Java application that runs several threads. After a while of watching the log it seems that one of those threads is not running anymore. My guess is that the

Answer 1

You can't use timeouts with traditionally synchronized methods. However, using the "new" java.util.concurrent stuff, you can use programatic locks that have timeout support.

For example, look at java.util.concurrent.locks.ReentrantLock

A reentrant mutual exclusion Lock with the same basic behavior and semantics as the implicit monitor lock accessed using synchronized methods and statements, but with extended capabilities.