Extracting Class names in Abstract classes with Generics.

I have this working:

Abstract class Foo<E> {
     Foo() {}

     public fooFun(E enigma) {
         // do important things. And then ...
         String className = enigma.getClass().getName();
         AuditLog.memo(className+" had things done to it");
     }
}

I'd like to decide my class name when my subclass gets instantiated, but
the following doesn't work for any values of xxxxx I've been able to
dream up:

Abstract class Foo<E> {

     private String className;

     Foo() {
         className = E.xxxxx.getClass().getName()
     }

     public fooFun(E enigma) {
         // do important things. And then ...
         AuditLog.memo(className+" had things done to it");
     }
}

Any clues? Which TFM should I R?

P.S. In case the above is insufficiently clear, the following classes
may illuminate my meaning a little.

class Apple {
    String variety;
    Apple() {}
}

class Brick {
    int weight;
    Brick() {}
}

class Zap extends Foo<Apple> {
     fooFun(new Apple());
     // I want my Audit log to say "Apple had ..."
}

class Pow extends Foo<Brick> {
     fooFun(new Brick());
     // I want my Audit log to say "Brick had ..."
}