CS202 Java-95
Interfaces
in Java
lThe interface
keyword creates a completely abstract class
•One that provides for no implementation
•Makes it “pure”
•It allows us to
specify the method names, argumetn lists, and return types – but no bodies
•It can include data
members, but they are always implicitly static and final
•It provides a “form” rather than an implemented
class
•Use the “interface” keyword instead of the class
keyword
•All of the members
are automatically “public” even if you don’t use the keyword. They are never “friendly” and cannot be
protected or private!