http://javablog.pearlchain.net/wordpress Sharing our experiences with the world Thu, 29 Jul 2010 14:30:30 +0000 http://backend.userland.com/rss092 en As remarked on several places update 21 of 1.6 of the sun oracle jvm doesn't work well when using lot of perm gem space. This was caused because oracle changed the vendors name of the jvm to oracle. Because of this eclipse launcher didn't see it was the sun oracle jvm ... http://javablog.pearlchain.net/wordpress/?p=435 Just installed the new Eclipse 3.6 (Helios) on my Ubuntu. Got some problems with Subclipse saying it could not find the JavaHL libraries (needed for interfacing from Java with Subversion). Problem is that the libraries are installed in /usr/lib/jni and the Eclipse java.library.path doesn't point to that directory. How to solve ... http://javablog.pearlchain.net/wordpress/?p=428 Just found out really cool eclipse shortcut... ctrl+3 you can use it to start any eclipse command... While we are talking about shortCuts: - ctrl+Shift+L to show all shortcuts - alt + shift + x or alt + shift + d, t (j or something else) to start running or debugging current test (t) ... http://javablog.pearlchain.net/wordpress/?p=418 We must be lucky Terracota sometimes releases new versions of ehcache.  This brought up the hidden feature of their automated update checker.   Each time you start an application with Ehcache enabled, it makes a connection to the terracotta webserver to check for a new version.  This feature is enabled by ... http://javablog.pearlchain.net/wordpress/?p=414 Google has released a new version of Google spreadsheets for testing. It looks as if a number of MS Excel UI features have been introduced to make the UI faster to work with. An overview of the new features can be found at: http://docs.google.com/support/bin/answer.py?answer=174915 http://javablog.pearlchain.net/wordpress/?p=408 The following feature has been added to the GenericSelectorForm: setting initial default values and setting default values after the form is cleared. This feature might come in handy when you want to have some default values entered when a selector is shown, and when you want these default values to be ... http://javablog.pearlchain.net/wordpress/?p=372 for all of those who are wondering what the TSVNCache.exe process is doing, and why the windows explorer is rather slow after installing Tortoise SVN. By default, TortoiseSVN looks in every folder you open for SVN information.  It tries to get SVN info for all files in the folder you're opening ... http://javablog.pearlchain.net/wordpress/?p=366 Since our business didn't want us to use floating points any more, but something more precise, we decided to start using BigDecimals instead of doubles. Our calculations are actually fairly straight forward. Something like private double calc(double x, double y, double previous){ return previous * (x/y); } So I converted the ... http://javablog.pearlchain.net/wordpress/?p=342 The other day I tried to perform the following code: public @interface MyAnn { String value(); } @MyAnn(value = "foo") public class MyClass { } .. MyClass.class.getAnnotation(MyAnn.class).value(); This gave me a NullPointerException because the annotation was not found. I cursed, I googled, and I felt stupid for a whole day ;) Later, I figured out it has something ... http://javablog.pearlchain.net/wordpress/?p=337 Jaxb is part of the jdk since jdk version 6. The earliest versions of the jdk 6 (update 1 till 3) have jaxb 2.0 included. The later versions of jdk 6 make use of jaxb 2.1. Our pearlchain application makes use of camel which on its turn depends on jaxb version ... http://javablog.pearlchain.net/wordpress/?p=331