Hello, I'm writing (well, completing) an "extension" of Java which will help role programming.
I translate my code to Java code with javacc. My compilers add to every declared class some code. Here's an example to be clearer:

MyClass extends String implements ObjectWithRoles { //implements... is added
    /*Added by me */
    public setRole(...){...}
    public ...
    /*Ends of stuff added*/
    ...//myClass stuff
}

It adds Implements.. and the necessary methods to EVERY SINGLE CLASS you declare. Quite rough, isnt'it?

It will be better if I write my methods in one class and all class extends that.. but.. if class already extends another class (just like the example)?

I don't want to create a sort of wrapper that manage roles because i don't want that the programmer has to know much more than Java, few new reserved words and their use.

My idea was to extends java.lang.Object.. but you can't. (right?)
Other ideas?

I'm new here, but I follow this site so thank you for reading and all the answers you give! (I apologize for english, I'm italian)