NewInstance

Another funny video I found around.

I very much prefer this approach: OutputStream out = new MyOutputStream(…); //may throw IOException try { //use the stream } finally { out.close(); } than this: OutputStream out = null; try { out = new MyOutputStream(…); //may throw IOException //use the stream } finally { if (out != null) { out.close(); } } I just [...]

When I first had to use OS X I had hard time with some things that weren’t working as expected. I thought they were usability bugs, but of course don’t try to argue about that with a veteran Apple user, because “you’re ugly and stupid, and that’s the way it should be! And OSX has [...]

Today I was having a look on how the git-completition is implemented. If you have not enabled the completition for git, I think you should really read my article on how to do it. So I found this two links, that explain the basics on how to implement bash completion for simple commands: An introduction [...]

Are you habit to have some configuration files packaged inside the jar of your application? If so, you can still have a look at those configuration files in the running environment using the unzip Unix utility. $ unzip -p /opt/myapp/lib/my-app.jar log4j.properties log4j.rootLogger=INFO,stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Threshold=INFO log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{dd-MMM hh:mm} [%-5p] %m%n The -p option uncompress and prints [...]

I wrote in a previous article how easy it is to translate Java object to/from XML, without adding exotic library dependencies to your project; recently I’ve going through the code of one of my colleague and I discovered that the 3 line necessary to marshal and un-marshal the XML can be shortened to a single [...]

I recently started to use a feature in Eclipse 3.6.1 that I didn’t notice before: the “Save Actions”. Basically you can configure some actions that will be done automatically when you save a Java source. Some of them are really useful, like Organizing the imports, adding ‘final’ to private member instances, etc. Here the screen-shot [...]

Just discovered an interesting bug in Java interpreter and compiler, that makes them hang when converting the value 2.2250738585072012e-308. Nice to know. The bug has been reported to Oracle, but I supposed they will include this in their collection of bugs and sell it as “Oracle Database 12g” product. :-)

There are a certain number of naming conventions used for unit tests. At beginning, with JUnit 3, to define a test it was mandatory that the class name was named like MyClassTest, be extending from TestCase and all the test method names were starting with ‘test’ as in ‘testMyMethod()’. I think that this is a [...]

Yesterday I took back some source samples I was using to learn android, so I got a good chance to build android-sdk-2.2_r2-src.jar for anyone that may need it. I remember to readers that there is a script to generate those on this blog post, where I also explain how to use those files. For the [...]