> This information can be found in any Java book introducing the 
> language Java ...

Actually, I don't think it's all that obvious why the example didn't
work, because, for instance, the following does work if I just compile
and run it using Java:

class Test2 {

    static class HelloWorld {
	HelloWorld (String str) {
	    System.out.println(str);
	}
    }

    public static void main(String[] argv) {
	new HelloWorld("apple");
    }

}

-- Jeff