Consider a package x with these classes:

    interface Foo {
        static class Baz { }
    }

    class Bar {
        public static class Baz { }
    }

    public class Test { }

If you javadoc this package with only a -sourcepath, no -classpath, only Test
will be in the resulting documentation. That seems correct to me. However, if
you javadoc this package with both a -sourcepath and a -classpath (of compiled
classes), both Foo.Baz and Bar.Baz will appear in the resulting documentation.
This seems incorrect to me, since neither of these classes is accessible
outside the package.

(If the package contained some other public class that implemented Foo or extended Bar, then Foo.Baz or Bar.Baz would be accessible via inheritance, but that isn't the case in the example.)