667: Highlights

• If you want to provide universal access to instance variables and methods, then mark them with the public keyword.
• If you want to limit access to instance variables and methods to the package in which they are introduced and to subclasses of the class in which they are introduced, then mark them with the protected keyword.
• If you want to limit access to instance variables and methods to the package in which they are introduced, then do not mark them with the public, protected, or private keywords.
• If you want to limit access to instance variables and methods to the class in which they are introduced, then mark them with the private keyword.