We did an in-class code demo in this class. See the lecture code repository for this section for the completed example.

Today's example demonstrated:

• Variable scope

We saw that the scope of a local variable extends from the point of declaration to the end of the body in which it is declared.

• Method definition

We saw how to define a non-constructor method. This introduced the concept of a return-type specification and void.

• Instance variable

The scope of an instance variable is the entire class body - an instance variable can therefore be used in any method of the class. An instance variable declaration is marked 'private'.