class Foo {

    void bar(){
        int a;
        Integer b;
        Class<Integer> c;
        Class<? super Integer> d;
        Class<? extends Integer> e;
        Class<? extends Class<? super Class<? extends Integer>>> f;
        Class<? super Class<? extends Class<? super Integer>>> g;
        a;b;c;d;e;f;g;
    }

}