Dynamically Loading .jar into the AppletClassLoader of Signed Applet

Question

First of all, I thank you for reading this post. I will do everything I can to be concise, as I know you have things to do. If you're really busy, I summarize my question at the bottom of this post.
My goal:
1.) User opens applet page. As quickly as possible, he sees the "accept certificate" dialog.
2.) Applet gets OS vendor, and downloads native libraries (.dll for windows, etc.) and saves them in user.home/ my new dir: .taifDDR
3.) Calls are made to System.load(the downloaded .dlls) to get the natives available.
4.) Applet downloads the .jar files that we stripped so that the applet was smaller, one by one
5.) For each .jar downloaded, it goes through the entries, decodes the .class files, and shoves them onto the AppletClassLoader.
6.) Finally, the looping drawmation of the applet is linked to a subclass, that now has everything it needs to do what it wants.
I have gotten all the way to step 5!!! It was amazing!
But now I'm stuck on step 5. I can download the .jar files, read them, even decode the classes!
As evidence, I had it print out random Methods using reflection on the created classes:
public net.java.games.input.Component$Identifier net.java.games.input.AbstractComponent.getIdentifier()
public final void net.java.games.input.AbstractController.setEventQueueSize(int)
public java.lang.String net.java.games.input.Component$Identifier.toString()
public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException
... many many more So, its frustrating! I have the Class objects! But, whenever the applet begins to try to, say instantiate a new ControllerEnvironment (jinput library), it says ClassNotFoundException, because even though I made those Classes, they aren't linked to the system classLoader!
Here is how I am loading the classes from the jar and attempting to shove them on the appletclassloader:
ClassLoader load = null;
try {
     load = new AllPermissionsClassLoader(new URL[]{new File(url).toURL()});
} catch (MalformedURLException e2) {
     e2.printStackTrace();
final JarFile ajar = new JarFile(url);
... we iterate over the elements (trust me, this part works)
String name = entry.getName();
if (name.endsWith(".class")) {
     name = name.substring(0, name.length() - 6);
     name = name.replace('/', '.');
          Class g = load.loadClass(name);
public class AllPermissionsClassLoader extends URLClassLoader {
    public AllPermissionsClassLoader (URL[] urls) {
        super(urls);
    public AllPermissionsClassLoader (URL[] urls, ClassLoader parent) {
        super(urls, parent);
        System.out.println(parent);
    public AllPermissionsClassLoader (URL[] urls, ClassLoader parent, URLStreamHandlerFactory factory) {
        super(urls, parent, factory);
    protected PermissionCollection getPermissions (CodeSource codesource) {
        Permissions permissions = new Permissions();
        permissions.add(new AllPermission());
        return permissions;
}so, my assumption here is that if I create a new AllPermissionsClassLoader and then call loadClass, the loaded class (because it does return a valid Class object) is usable globally across my applet. If this is not true, how should I else be doing this? Thank you for Any advice you could offer!

Answer 1

I know it's two years ago but the OP's approach seems pointless to me.
4.) Applet downloads the .jar files that we stripped so that the applet was smaller, one by oneWhy? Just name the JAR files in the CLASSPATH attribute of the <applet> tag. Then what you describe in (5) and (6) happens automatically on demand.
protected PermissionCollection getPermissions (CodeSource codesource) {Who does he think is going to call that?