Incorporating Patrick's changes. I am not reall sure about the changes after the war, it is really 'or' it cannot be 'and'. I will change that when I do the reading through the whole chapter.
3 // BEGIN: design.insert.superclass2
4 public abstract class HelloClass extends SimpleHelloClass {
5 // FINISH: design.insert.superclass2
6 public abstract String sayHelloTo(String who);