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I didn't attend JavaOne in person, and I haven't yet had time to go through the presentations available online. But I find that you can pick up the atmosphere and all the really interesting things that went on, by reading the umpteen blogs and reports covering the event. And what thrilled me wasn't what anyone else was hyping. For me it was those numbers.

I loved those numbers. Six million Java developers (up 20 percent from last year); Four million Java Blu-Ray devices; Seven million Java set-top boxes; Over two billion mobile handsets running Java worldwide; Over two and a half billion Java cards; Over 700 million PCs with Java installed; adding up to over five billion Java-powered devices worldwide.

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Aren't those numbers something? Now on with the rest of our newsletter. And in keeping with the JavaOne theme, we have a report from Kirk from one of the presentations he attended, though in typical Kirk style, the presentation just sets a backdrop for a fascinating reminisce about Crays. And, of course, we have our usual news, article links, tools, and extracted tips. Javva the Hutt carries on telling us about his new job, which includes how NOT to use HashMaps; and, of course we have extracted all the tips from those articles.

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News

Java performance tuning related news.

• Consumer JRE Java Kernel: JRE is divided into a hundred or so different bundles; smaller jvm dll which dynamically swaps with the larger one when it becomes available; custom bundle build procedure; 2MB core download for hello world; 3.5MB core download for typical swing app.
• More New I/O APIs for the JavaTM Platform ("NIO.2"): filesystem interface, asynchronous I/O, multicast datagrams.
• GridGain Systems, the providers of Open Source Java Grid Computing, has announced the availability of the first public release of GridGain project, an enterprise open source grid computing platform for Java.
• TSS opens a knowledge center on Performance Management for Large-Scale Systems.
• SAP Memory Analyzer, reads HPROF dumps

Tools

Java performance tuning related tools.

• Coherence is a JCache-compliant in memory distributed data grid solution for clustered applications and application servers.
• SAP Memory Analyzer, reads HPROF dumps
• faban, another load testing harness
• Performance Inspector, A set of performance analysis tools for Windows and Linux that supports java processes.

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Articles

• Cray Reminiscences (Kirk Pepperdine/Fasterj.com)
• Implementing a Local Cache to Manage Resources (C. Enrique Ortiz/Sun)
• The Secrets of Concurrency (Part 1) (Dr. Heinz M. Kabutz/Java Specialists' Newsletter)
• No Objects Left Behind (Kirk Pepperdine/theserverside)
• Optimize website Performance (Mike Peters/softwareprojects)
• Async Thread Dumps on CVM (Mark Lam/java.net)
• Performance Of Alternative Switch Bytecodes (Scott Oaks/java.net)
• Singletons, Good Or Bad? (Frank Sommers, Howard Lovatt, Steve Merrick/Artima)

Jack Shirazi

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