James Lorenzen had an excellent blog post about the importance of a descriptive commit comment. I can't agree more, so I listed up what I try to leave in the commit messages. What do you try to leave in your commit messages?
Lack of backward compatibility in the ObjectWeb ASM library is painful.
Today I've digged deeper into one of the nastiest problems I ever encounted since I became a Java programmer.
How do you seek to arbitrary positions in a file that's 2^64 bytes long?
If you've been curious what all that stuff in the hs_err_pid1234.log file, this is how you use it to understand how JVM crashed.
My previous entry about JMX got some real feedback from people that are working on JMX. In appreciation of that, I wrote a little utility in the hope of contributing back to JMX.