The issue is that with JDK1.4.1, if endorsed.dirs is set you may run into many kinds of weird classloading problems. Some classes in the CLASSPATH or in a loader will not be found, even if you place them in jre/lib/ext.
The problem goes away as soon as you remove endorsed.dirs. I still need to find out why is this happening - but for now I fixed jasper to work with crimson ( the parser in JDK1.4 ) and I use tomcat without endorsed.
Update: Remy has the same problem, this time JMX can't be loaded. There is only one solution - stop using endorsed.dirs until Sun fixes it.
Update: It seems one ClassPath attribute in a jar included in endorsed was referencing other jars, and removing that fixes some of the problems. Still - endorsed is supposed to override a number of packages, it shouldn't affect the others.
Friday, January 17, 2003
Classloader fun with JDK1.4
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