Hello, I have the following requirement to implement: - I have a server that: - creates at runtime new classloaders that must see only parts of the server classpath (kind of private ClassLoader): - these new classloaders must not see each others Reading and testing JBoss Modules it seems to me the solution to my issue. I configured a set of modules and succeeded starting my Server with a module. Now I am trying to create dynamically the new classloaders which are composed of : - Server public API - Set of JARs embedded in an archive and only visible to the newly created ClassLoader So my idea was to do the following: - Create a new Module that would have as dependencies: - the server module (which has only exported a subset of classes) - a set of new JARs So code would look something like: ModuleIdentifier identifier = ModuleIdentifier.fromString("my new class loader"); Builder builder = ModuleSpec.build(identifier); DependencySpec dependencySpec = DependencySpec.createModuleDependencySpec( ModuleIdentifier.create("com.ubikingenierie.myserver")); builder.addDependency(dependencySpec); builder.addResourceRoot(ResourceLoaderSpec.createResourceLoaderSpec( ResourceLoaders.createJarResourceLoader( "name-of-jar1", new JarFile(new File("path to jar1"))))); builder.addResourceRoot(ResourceLoaderSpec.createResourceLoaderSpec( ResourceLoaders.createJarResourceLoader( "name-of-jar2", new JarFile(new File("path to jar2"))))); ModuleSpec moduleSpec = builder.create(); ...> > What's next ?????? I am stuck here because I don't understand how from this to create the ClassLoader as I need a Module Loader to build the Module then access ClassLoader And the issue is which one ? cause to get access to "com.ubikingenierie.myserver" I need the root one which I could access like this: - Module mod = ((ModuleClassLoader)Thread.currentThread.getContextClassLoaderr()).getModule().getModuleLoader() => which is a LocalModuleLoader But I don't see how to make it load my module , cause If I call loadModule it won't find ""my new class loader" as it's not in it. And If I create a new subclass of ModuleLoader I don't see how to make it use LocalModuleLoader for existing modules. I looked at ClassifyingModuleLoader which seemed to be a solution but I don't understand how to use it (no doc , no test case ...) Anyone can help ? Thanks Regards -- Cordialement. Philippe M.