Using Byteman to Find Out Why the TimeZone Changed on a Java App Server

I found the following article/blog post and I thought it worthy of mentioning it here.

Using Byteman to Find Out Why the TimeZone Changed on a Java App Server

It concerns the injection of a monitor into your application (or application server), to monitor certain method calls, and print a Stacktrace (for instance) if they occur.

Handy if it occurs deep inside a framework or production server or in one of many deployed wars, and you don't know where.

References

Developers Redhat - Using Byteman to Find Out Why the TimeZone Changed on a Java App Server

https://developers.redhat.com/blog/2018/02/21/byteman-timezone-changed/

Jboss - Byteman

http://byteman.jboss.org/