NFJS Day 3 Session 2: The Busy Java Developer Guide to Hacking the JDK
As an aside, I’m amused that all of Ted Neward’s sessions begin with “The Busy Java Developers Guide To…”, I guess that’s because us Java developers are always busy since we over-complicate everything. 
Anyhow, the session started with Ted’s usual wit and humor, and then moved on to exploring the tools available for hacking the JDK. The first one delved into? JConsole. I had previously gotten a glimpse of JConsole at Ken Sipe’s session on Spring and JMX to manage and view MBeans… here I got to see in depth all of the possibilities JConsole provides… how did I miss it? Had I been sleeping the past couple years (the short answer to that is yes)?
Did you know you can grab a snapshot of the java heap? Change runtime configuration while the application is running? It’s almost scary when you think of all the possibilities and extremes you could go to with it. It’s really cool that you can use OQL to query the heap for different objects and get all kinds of information on their state at the time the snapshot was taken.
Unfortunately my laptop battery is about to die, so I’ll follow up this post later.
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