G4G0-1/Semester 1/Programming 1/Week 4/Week 4 Programming 1 - Understanding Class Definitions cont..md

Lecture 1 (11:00) - Class Definitions

• String is capitalised due to it being a class.

Scope

• Parameter can only be accessed from the body of the method in which it is declared. We can say its scope is restricted to the body of the method.
• The scope of a field variable is the body of the class it is declared in.

Lifetime and Accessor Methods

• Lifetime of a parameter of a method is the duration of a particular call to a method.
• Value is lost when call completed
• Lifetime of an objects field variable is the lifetime of the object itself
• Accessor method allows access to the value of a field without changing the state of an object