gpars ... and FindBugs, CheckStyle, etc.

I attended, at Gateway Groovy, the last half or so of Alex Miller's talk on gpars.
The little bit of the talk on ParallelArrayUtil was good.
His code example is at github.com/puredanger/gpars-examples
In the Q&A portion, Scala Akka was mentioned.

In Darryl Parks presented a good presentation and talk at the Gateway JUG. It was on FindBugs, PMD, CheckStyle, Sonar and XRadar.

He mentioned two good books:
Code Complete
Clean Code

During Q&A, appsight was mentioned as a good but expensive product for run-time code problem detection. Jack mentioned a problem he and a team looked into; they over-anticipated that the performance problem was with web services, when in fact it was with XPath.
Also, jester was mentioned as a good mutation tester; something with which you can test your junit tests.

Upcoming talk will be on JPA 2.0 (and it including hibernate criteriaquery).