Java JDK on OS-X (here: 10.9, Mavericks)

Boredom warning: This post describes some commands to configure Java-7 on Mac OS-X. Now fun to read.

 

After my recent upgrade to 10.9, I had to install Java again (Apple seems to be regarding Java as something evil…)

The Apple-Java is still 1.6 - if you’re happy with that: use the proposed download from Apple and you’re all set.

If, e.g. for software development, you want something a bit more recent...

 

Downloading from Oracle, running the installer… but still, 1.6 is the active JDK.

(Simple) solution: In any shell (e.g. Terminal, iTerm):

sudo ln -sf /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK

 

On your system, the PATH to java might be set at three different locations:

 ~/.profile

 /etc/paths

 /etc/paths.d

If you happen to have / need  a JAVA_HOME environment variable:

export JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home"

Make sure, JAVA_HOME is set in one of the abovementioned locations. I suggest you get rid of it… (delete it from ~/.profile)

 

 

 

Großartiges Beispiel für Architektur und ihre Dokumentation

Stefan Zörner hat seine Open-Source Schach-Engine DokChess bei Sourceforge veröffentlicht und die aus meiner Sicht beste Architekturdokumentation aller OpenSource Projekte überhaupt geschaffen - Chapeau! Er verwendet dazu übrigens arc42 - freiwillig!










(lang andauernder Beifall meinerseits…)


Und wo ich schon beim Lob bin: Sein Buch (in dem er unter anderem das coole DokChess-Beispiel erklärt) durfte ich schon vorab lesen und möchte es jedem Software-Architekten empfehlen!

Highly regarded Rickard Öberg creates "New Energy for Java"...

Only a few people combine creativity and the ability to deliver solutions... one of them is Rickard Öberg. His brain- and codechildren range from XDoclet to the JBoss application server, cool stuff.

Now he's back with the idea (and framework) he calls new energy for java in a lengthy blog entry.

He names it "QI4J" (pronounced "chee for jay") - a framework in the area of domain-driven development (I blogged about it here). Well, just in case you're architecting software systems, you should check it out...

Heard of JBoss-Seam? Want to know what it's all about?

Manning has posted a (free) well-written chapter of a forthcoming book on Seam on their site...

I wonder wether critique and suggestions will be incorporated into the final version... maybe somebody from the JBoss-Seam-Team should try...