Classes: Inheritance

• Type (structure) and methods (behavior) are both inherited by subclasses

• Exception: “init” method not inherited

• Semantics: substitutability

  • Example: a Student can appear wherever a Person is allowed to appear (students are people too!)
  • Collection types can participate in inheritance

• Multiple Inheritance:

  • Two or more direct superclasses (e.g. WorkStudy)
  • Must resolve naming conflicts (none in this case)

Previous slide

Next slide

Back to first slide

View graphic version