classloader

We are using JBoss 4.2.3 which in turn comes with version 3.2.1.ga of Hibernate. I would like to use Hibernate 3.5.1-FINAL which supports JPA 2.0. I've been trying to make this work by putting my own hibernate jars in my WEB-INF/lib folder and creating my own classloader for my WAR in jboss-web.xml <jboss-web> <loader-repository> com.moo.foo:archive=catalog-archive </loader-repository> </jboss-web> I've also tried: <jboss-web> <class-loading java2ClassLoadingCompliance="false"> <loader-repository> com.moo.catalog:loader=catalogLoader <loader-repository-config>java2ParentDelegation=false<

I've come into something I haven't come across before in Java and that is, I need to create a new instance of say the ArrayList class at runtime without assigning a known type then add data to the list. It sounds a bit vague so here is an example: Class<?> c = i.getClass(); Constructor<?> con = ArrayList.class.getConstructor(); ArrayList<?> al = (ArrayList<?>)con.newInstance(); al.add("something"); Now the reason I'm doing this versus just using generics is because generics are already being used heavily and the "i" variable in this example would be given to use as type "?". I would really

Let's say I have three classes, example.ClassA, example.ClassB, and example.ClassLoader. ClassA prints out HelloWorld and ClassB imports example.ClassA and invokes its main() method. If I do this: java -cp Example.jar -Djava.system.class.loader=example.ClassLoader example.ClassA It works and uses my class loader. However, if I do this: java -cp Example.jar -Djava.system.class.loader=example.ClassLoader example.ClassB ClassB uses my class loader, but ClassA (which was imported by ClassB) is loaded using a default class loader. Is there any way to force Java to always use my class loader (unless

I've got a question regarding the guarantees, if any, in the following scenario (note that the question is not "How to do this in a different way?" , the question is really about class loading order in the following case (to better understand how class loading works). Here's the hypothetical scenario... There's a .war file that has the following (partial) directory structure: WEB-INF/classes/com/acme/Bunny.class . . . WEB-INF/lib/acme.jar Both Bunny.class files have import referencing other classes from acme.jar Bunny.class in WEB-INF/classes/... is the only class that has the same name/path

I am writing web app for java learning. Using which users may compile their code on my serwer + run that code. Compiling is easy with JavaCompiler: JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>(); CompilationTask task = compiler.getTask(null, null, diagnostics, null, null, prepareFile(nazwa, content)); task.call(); List<String> returnErrors = new ArrayList<String>(); String tmp = new String(); for (Diagnostic diagnostic : diagnostics.getDiagnostics()) { tmp = String.valueOf(diagnostic

The environment is WAS 6.1 on Linux, deploying a webapp that uses classes from xercesImpl.jar. Due to company policy restrictions, the app must be deployed with settings: Class Loader Order Classes loaded with parent class loader first -> Classes loaded with application class loader first WAR class loader policy Class loader for each WAR file in application -> Single class loader for application The WAR file contains a copy of xercesImpl.jar, the same one that was in the classpath when the app was compiled. When launching the webapp, when Spring tries to parse its configs, it throws: java.lang

Hello all and thanks for the attention! I have a problem that must both be easy and obvious, yet I am stuck. I want to deliver dynamically created Java classes to be used by a 3rd party library via a custom ClassLoader. Now my problem is: How do I set my custom ClassLoader to be used to load this classes when I do not load them directly myself? I thought when I used my ClassLoader to load a certain class, it became this class's ClassLoader, and all classes loaded from that class would be channeled through my ClassLoader. I created a custom ClassLoader, following this official tutorial: http:/