NewInstance

Last time I used .ear packaging there was no support for sharing information between web applications: you needed to use web services, rest, etc. This evening I just made a search on the internet to check if things are better now. It seems that nothing is changed. I found that some application servers have implemented [...]

Apparently, with JDK 7 we will have Strings in switch statements. I got a SCPJ certification long time back, but if someone asks me to write a switch statement in a job interview today, I could probably fail: I begun writing Java code in 2000, and I bet I used switch statement six or seven [...]

Registration/Login is the #1 usability problem on websites. I hate security paranoia when it is not needed (ok, I can understand a bank…) My suggestions to avoid boring the people using our software: Let the user choose the preferred password. Don’t assign it your own (especially with random chars!!!). User will forget it and abandon [...]

Yesterday we had a business meeting in London. We flew there and we had the chance to walk through the city and enjoy the nightlife. In my previous visits to London I never appreciated the city very much: too noisy, to rainy, too expensive, too much people wearing formal. Sometime you can feel like being [...]

Today I found a cute code snippet on Alex‘s Blog and Euxx: 1public class Weird { 2 3 public static void main(String[] args) { 4 throw null; 5 } 6 7} It compiles and trows a NullPointerException: Exception in thread “main” java.lang.NullPointerException at Weird.main(Weird.java:4) I think that it is strange that this stuff compiles: the [...]

Forcing fsck on next reboot $ sudo touch /forcefsck $ sudo reboot Merging PDFs $ sudo apt-get install pdftk $ pdftk file1.pdf file2.pdf file3.pdf file4.pdf cat output merge.pdf Formatting USB disks/memories mkfs -t vfat -V -I -c /dev/sdb -n LABEL eject /dev/sdb Fixing Oracle Repository GPG/PGP Key Error The error (in Synaptic or during “apt-get [...]

I bought a Sony PSP during last winter, and I am very happy of that. The videgames are amazing, I didn’t imagine that there were games so impressive on a so little machine. In particular I appreciated Ridge Racer, Final Fantasy the war of the Lions, God of War: Chains of Olympus, and many more. [...]

It's sometime useful to access the version information from inside the program, for example to show that to the user, to manage upgrades or to identify the running version when a user reports a bug, etc. When you build using maven, inside your artifacts it is included the pom file and the a property file [...]

If you ever had the need to trace HTTP requests (and if you ever did advanced web development you did!), you probably found invaluable tools like TCPTrace for Windows. On Linux I found a good replacement: Download apache axis: axis-bin-1_4.tar.gz Install it where you prefer. Create a script to launch tcpmon #! /bin/sh export JAVA_HOME=/usr/lib/jvm/java-6-sun [...]

The error: Selecting from Eclipse, Preferences>Team>SVN and select SVN interface: JavaHL(JNI) on Linux you get: Failed to load JavaHL Library. These are errors that were encountered: no libsvnjavahl-1 in java.library.path no svnjavahl-1 in java.library.path no svnjavahl in java.library.path java.library.path = /usr/lib/jvm/java-6-sun-1.6.0.03/jre/lib/i368/client::/usr/lib/jvm/java-6-sun-1.6.0.03/jre/lib/i386::/usr/lib/xulrunner-addons:/usr/lib/xulrunner/addons:/usr/java/packages/lib/i386:/lib:/usr/lib The solution: install Java bindings for Subversion libraries: $ sudo apt-get install libsvn-java This [...]