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Last month's feature article on the Commando Pattern was an April fool. The code works exactly as advertised, but it is not a pattern because it is not a good practice. It is not even an anti-pattern because, despite the odd person who may have used it for real, it is not something that is used frequently in projects. Well done to those of you who spotted the joke, and sorry to those who didn't, but we like our April fool. At least you were in good company, I got more responses for that pattern article than I have for almost anything else on this site, and you were evenly split on whether you realized it was an April fool. At least you appeared to be, but of course you guys and gals may have been playing a yet more subtle April fool back at me ...

If you enjoyed that April fool, you might also enjoy last year's April fool, our interview with James L. Frank giving the "true" story of the creation of Java.

A note from this newsletter's sponsor

In the newsletter we list our usual raft of articles, news, and more. In addition, we have all our usual sections. Kirk's roundup covers maintainability vs. performance, SQL tuning, Value objects, messaging and more; Our interview is with Gavin King, founder Hibernate; And our question of the month asks how to profile an applet.

Javva The Hutt rolls up his sleeves for a bout of performance tuning; We have a new cartoon, an article about double dispatching, and, of course nearly 100 new performance tips extracted in concise form.

A note from this newsletter's sponsor

News

Java performance tuning related news.

• Interesting followup discussion on the java memory model
• Discussion about garbage collection
• JBossCache 1.0 caching component released
• JDBInsight 2.1 New Features
• Raw NIO Performance, apparently not so great, but see the comments: it depends on what you are testing.
• Teamstudio ThreadProfiler in the news
• JFluid 1.4.1 released

A note from this newsletter's sponsor

Tools

• Samurai: GUI application for analyzing JVM thread dumps and verbosegc logs
• Cyanea/One J2EE monitor
• OpenSymphony Quartz Job Scheduler
• Jamit intended for analyzing access modifiers, but can eliminate dead code for smaller class sizes.
• Abbot Java GUI Test Framework
• Candle's PathWAI J2EE monitor

Recent Articles

• Really Large Databases (Daniel Liu/Oracle)
• Genetic Algorithms & Optimal Solutions (Michael Larson/Dr. Dobb's Journal)
• 9 Common Flaws of Unportable Mobile Java Apps (Simon Keogh/devX)
• Writing garbage collection-friendly classes (Author Brian Goetz/IBM)
• Transactions in WebSphere 5.0 (Author Kyle Brown/Websphere Journal)
• Web services performance considerations, Part 1 (Holt Adams/IBM)
• Web services performance considerations, Part 2 (Holt Adams/IBM)
• Concurrency Utilities (Brian Goetz/java.net)
• Thread-Dumps (Author Alexandre Rafalovitch/BEA)
• Rory Herriman on remote performance management (Programmers Report Staff/ADTmag)
• Multi-Tier Tuning (Allan Edwards/Oracle)
• Job Scheduling in Java (Dejan Bosanac /OnJava)

Jack Shirazi

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