Study Guide:

1. What do the following modifiers mean when applied to a method:
   • public
   • private
   • protected
   • "default" -- no modifier present
2. How do you organize a set of classes into a package?
3. How do you import classes from other packages?
4. What is the Singleton pattern and how do you implement it in Java?
5. What does "static" mean when applied to an instance variable or method?