How can i create a dynamic proxy for say an interface Foo?

To create a proxy for some interface Foo:

     InvocationHandler handler = new MyInvocationHandler(...);
     Class proxyClass = Proxy.getProxyClass(
         Foo.class.getClassLoader(), new Class[] { Foo.class });
     Foo f = (Foo) proxyClass.
         getConstructor(new Class[] { InvocationHandler.class }).
         newInstance(new Object[] { handler });
 

     Foo f = (Foo) Proxy.newProxyInstance(Foo.class.getClassLoader(),
                                          new Class[] { Foo.class },
                                          handler);