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- From Parks Computing, a short word of advice in “On Recruiting” for the movers and shakers (and those who want to be movers and shakers): “The quality of your company’s software will never exceed the quality of your company’s software developers.”
- DZone is back with a few interesting posts: “OpenJDK – Is Now the Time?” starts by wondering is OpenJDK is reaching critical mass to the point where it should be considered instead of the standard Oracle JDK. It’s an odd post.
- It points out that if Google had used OpenJDK instead of Oracle’s libraries, the lawsuit might not have happened (Editor’s note: it might have!). This is a good point.
- It says that the deployment options might open up, with standard package management instead of a custom update process specific to Java. This is also a good point.
- It points out that OpenJDK’s performance and scalability is the same as the Oracle JDK. This is… not a good point. The codebases are the same (they’re routinely synchronized: code in one will be in the other eventually.) Oracle’s JDK is effectively OpenJDK with some closed-source libraries, so Oracle’s JVM can write JPEGs natively (and some other features like that.)
- It also points out community improvements to OpenJDK – “As open source developer’s continue to provide insight into the source code, it is likely that OpenJDK could begin to outperform the version released by Oracle.” Um… since the codebases are the same, that’s not likely to happen much at all.
- From ##java, cheeser had a beautiful expression of reference equivalence. Someone was asking about how two references (
A and B) pointing to the same object work – cheeser said, “If B is your *name*, A would be a nickname. Both of them mean you so anything said to either name or nickname both go to you.“
- “Fix PATH environment variable for IntelliJ IDEA on Mac OS X” describes a way for OSX users to provide the OS’s PATH to the popular IDE. It turns out that programs installed via
brew aren’t necessarily available to IDEA unless you start IDEA from the shell – which few do. It’s easy to fix; this post shows you how.
- Another from DZone – they’re on fire! – Per-Ã…ke Minborg posted “Overview of Java’s Escape Analysis“, which discusses what escape analysis is (it’s a way of determining the visibility of an object) and what it means for performance. (If an object isn’t used outside of a method or a block, it can be allocated on the stack rather than on the JVM heap – and as fast as the heap can be in Java, the stack is much faster.)
- Pippo is a new, very small microframework based on services. The example looks … easy enough; take a look, see what you think.
- Yet one more from DZone: Exceptions in Java: You’re (Probably) Doing It Wrong advocates the use of
RuntimeException to get rid of those pesky throws clauses and forced try/catch blocks in your Java code. It’s an argument Spring advocates, and checked exceptions aren’t part of languages like Scala… but I personally find the over-reliance on unchecked exceptions to be terrible. The core argument against check exceptions from the article: “The old argument is that (the use of checked exceptions) “forces†developers to handle exceptions properly. Anyone on a real code base knows that this does not happen, and Exceptions are routinely ignored, or printed out and then ignored. This isn’t some sign of a terrible developer; it is such a common occurrence that it is a sign that checked Exceptions are broken.” Except no, it’s such a common occurrence that it’s a sign that developers are terrible. This article was so terrible that I’ll probably write up a better response as soon as I get some time.
- “O Java EE 7 Application Servers, Where Art Thou?” is a humorously-titled summary of the state of Java EE 7 deployment options, covering the full and web profiles for Java EE 7. It’s the sort of thing one wants to know, honestly: great job, Antonio.
- From Stack Overflow, “How to get started with Akka streams?” is a Scala question, not a Java one, but Akka has a Java implementation as well. The first answer (accepted, upvoted) is a fantastic explanation. I may port it to pure Java just for example’s sake…
- From our friends at DZone, Orson Charts 1.5 is Open Source announces that Orson Charts 1.5 has been released, and it’s available under the GPLv3 (a commercial license is available for people who don’t want the restrictions of the GPL). It’s a 3D charting library, not a 2D charting library, and they say if you need 2D charts, you should use JFreeChart – Orson Charts looks great on first impressions, though. (It’s worth noting that apparently both Orson Charts and JFreeChart were from the same author.)
- More from DZone: Application Security for Java Developers is a summary of security concerns. It’s really more of a short “have you thought of this?” post – useful, but not very deep.