Java Modifiers

Private means this could only be seen within this class.

Protected means "package private", this could be seen by subclasses and package members.

            | Class | Package | Subclass | Subclass | World
            |       |         |(same pkg)|(diff pkg)| 
————————————+———————+—————————+——————————+——————————+————————
public      |   +   |    +    |    +     |     +    |   +     
————————————+———————+—————————+——————————+——————————+————————
protected   |   +   |    +    |    +     |     +    |   o     
————————————+———————+—————————+——————————+——————————+————————
no modifier |   +   |    +    |    +     |     o    |   o
————————————+———————+—————————+——————————+——————————+————————
private     |   +   |    o    |    o     |     o    |   o

+ : accessible
o : not accessible