I have also implemented muilimethods in a java framework that I am working on. I too wanted to be able to use abstract methods instead of interfaces so that I could put default implementation of methods in the interfcae definitions.

Anyway, I am currently using the cglib library instead of Java proxies. It was very easy to replace java.lang.reflect.Proxy class with the net.sf.cglib.proxy.Enhancer class. Basically the Enhance lets you create a proxy using abstract classes instead of interfaces.

Here’s an example of how to use it…

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Enhancer enhancer = new Enhancer();

    enhancer.setSuperclass(roleClass);

    enhancer.setInterfaces(new Class[] { MeteorProxy.class });

    enhancer.setCallback(new RoleInvocationHandler(_repository, this, roleClass));

    enhancer.setClassLoader(Activator.getMeteorClassloader());

    role= (T)enhancer.create();

…the classes passed to the setInterfaces method may include abstract classes as well as interfaces.

Best Regards, ted stockwell