Jabber Love. I've been installing and playing with Jabber since yesterday afternoon. If you don't know what Jabber is - it's an open, XML-based protocol for instant messaging and presence. So it's basically an open-source instant messaging server. It takes about 10 minutes to setup and get running, and I've installed it successfully on both Red Hat 7.3 and Windows XP. Easy as pie - that's how open source should be!
I went on an upgrading rampage yesterday and ended the day with the worst feeling. My Struts 1.1b2 application appeared to work fine on most things, however, I kept getting the following error when I tried to submit a form with indexed input values:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:475)
at org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:410)
at org.apache.commons.beanutils.PropertyUtils.getNestedProperty(PropertyUtils.java:749)
at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:780)
...
Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:508)
at java.util.ArrayList.get(ArrayList.java:320)
at com.onpoint.webapp.form.QuestionForm.getAnswer(QuestionForm.java:321)
The items I attempted to upgrade were:
After hours of banging my head against the wall for hours and even trying versions of my code from a week ago, I decided to try the "classic" compiler in Ant. Which I soon learned should now be named "modern." Whalla - it fixed the above problem! My advice - DON'T USE JIKES 1.16 to compile your Struts-based web app! I also found that switching to modern from jikes reduced
my build process from 1 min 20 seconds to 50 seconds - I'm sold.
I ended up not upgrading to Tomcat 4.1.12 (rather to 4.0.5) because I found that my error-pages were not being recognized. I hope that a client using the application never sees an error page, but if they do - I'd rather them see my pretty page vs. a stacktrace.
I dig Google's new News feature I found this tasty treat this morning.
Microsoft acknowledges Linux threat
"We got beaten by Linux in the very high-end systems, but we have a whole development team despatched on that now," he is reported as saying in the Financial Times: "Linux isn't going to go away. Our job is to provide a better product in the marketplace." -- Steve Ballmer, September 2002. [ Full Article ]