Home » Author Archives: Dustin Marx (page 13)

Author Archives: Dustin Marx

Guava Stopwatch

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Guava‘s Stopwatch is another Guava class new to Guava Release 10 (as is Optional, the subject of another recent post). As its name implies, this simple class provides a method to conveniently measure time elapsed between two code points. It has several advantages over use of System.currentTimeMillis() or System.nanoTime(). I don’t focus on these advantages here, but the Javadoc documentation ...

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Guava’s Strings Class

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In the post Checking for Null or Empty or White Space Only String in Java, I demonstrated common approaches in the Java ecosystem (standard Java, Guava, Apache Commons Lang, and Groovy) for checking whether a String is null, empty, or white space only similar to what C# supports with the String.IsNullOrWhiteSpace method. One of the approaches I showed was a ...

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Design Patterns: Mogwai or Gremlins?

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The 1994 book Design Patterns: Elements of Reusable Object-Oriented Software introduced many software developers to the concept of ‘a catalog of simple and succinct solutions to commonly occurring design problems’ that nearly every object-oriented software developer knows of today as ‘design patterns.’ Like most technical concepts (whether real or hype or somewhere in between), ‘design patterns’ seemed to go through ...

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Java: The Checker Framework

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One of the interesting tools I learned about at JavaOne 2012 is The Checker Framework. One of the Checker Framework’s web pages states that the Checker Framework ‘enhances Java’s type system to make it more powerful and useful,’ allowing software developers ‘to detect and prevent errors in their Java programs.’ One way to look at the Checker Framework is as ...

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JavaOne 2012: Observations and Impressions

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I am starting this particular blog post as I sit the the San Francisco International Airport waiting to board an airplane to head home after another satisfying but tiring JavaOne (2012) experience. It is difficult to write another blog post after having frantically written ~30 blog posts on the conference since the keynotes on last Sunday, but I want to ...

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JavaOne 2012: JavaFX Graphics Tips and Tricks

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I returned to the Hilton (Imperial Ballroom B) to see Richard Bair‘s (Oracle Java Client Architect) ‘JavaFX Graphics Tips and Tricks.’ Bair is associated with FX Experience and obviously knows JavaFX. Bair said a theme of his talk is on performance. He cautioned that as with most things performance related, avoid performance pre-optimization. He had a big yellow caution screen ...

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JavaOne 2012: NetBeans.Next – The Roadmap Ahead

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I walked the few steps necessary from Continental Ballroom 4 and one NetBeans topic (Project Easel) to Continental Ballroom 5 to see another NetBeans-oriented presentation: ‘NetBeans.Next – The Roadmap Ahead.’ Ashwin Rao started the Birds of a Feather (BoF) presentation and introduced John Ceccarelli and Tinuola Awopetu. Several audience members attended yesterday’s NetBeans Community Day. Rao showed the typical Oracle ...

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JavaOne 2012: Diagnosing Your Application on the JVM

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It was worth attending Staffan Larsen‘s (Oracle Java Serviceability Architect) presentation ‘Diagnosing Your Application on the JVM‘ (Hilton Plaza A/B) just for learning of the new jcmd command-line tool provided with Oracle’s JVM 7. The rest of the presentation was ‘bonus’ for me, which was nice for the last session I attended on Wednesday of JavaOne 2012. The Oracle HotSpot ...

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JavaOne 2012: Up, Up, and Out: Scaling Software with Akka

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After the late-ending Community Keynote, I headed to Hilton Golden Gate 3/4/5 to see Viktor Klang‘s (Typesafe) ‘Up, Up and Out: Akka’ presentation. Klang is the technical lead on Akka. Akka is a ‘beautiful mountain in northern Sweden,’ is a Goddess, and is a Scala-based ‘toolkit and runtime for building highly concurrent, distributed, and fault tolerant event-driven applications on the ...

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JavaOne 2012: 101 Ways to Improve Java – Why Developer Participation Matters

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Bruno Souza, Martijn Verburg, and Heather Vancura presented ‘101 Ways to Improve Java: Why Developer Participation Matters’ in Continental Ballroom 4 of the Hilton. They split these up into their areas of greatest familiarity. Souza, the founder and coordinator of SouJava, talked about greater participation via user groups. Verberg, also heavily involved in user groups with the London Java Community ...

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