Java语言规范:http://docs.oracle.com/javase/specs/jls/se8/html/jls-8.html#jls-8.2
Members of a class that are declared private are not inherited by subclasses of that class.
Only members of a class that are declared protected or public are inherited by subclasses declared in a package other than the one in which the class is declared.
英语不好,谁给翻译下?