Object-Oriented Programming, unit: Inheritance. Core concepts, terminology, and worked-example cues a college student meets for this unit, building on prior units without repeating them. Front: a term, concept, or short problem cue. Back: the definition, explanation, or answer.
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- What is inheritance?
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A mechanism where a class derives properties and behaviors from another class- What is a superclass (parent class)?
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The class being inherited from- What is a subclass (child class)?
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A class that inherits from another class- What is method inheritance?
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A subclass automatically gaining access to methods defined in its superclass- What is method overriding?
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A subclass providing its own implementation of a method already defined in its superclass- What is single inheritance?
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A class inheriting from exactly one superclass- What is multiple inheritance?
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A class inheriting from more than one superclass- What is a common issue with multiple inheritance?
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Ambiguity when two superclasses define a member with the same name (the diamond problem)- What is the 'is-a' relationship in inheritance?
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A subclass represents a specialized version of its superclass, such as a Dog is an Animal- What is 'super' typically used for in a subclass?
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Calling a method or constructor from the superclass- What is a hierarchy of classes?
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A tree-like structure showing how classes relate through inheritance- What is code reuse, as it relates to inheritance?
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Sharing common functionality defined once in a superclass across many subclasses- What is inheritance's main risk if overused?
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Tightly coupling classes into rigid hierarchies that are hard to change- What is composition, as an alternative to inheritance?
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Building complex behavior by combining objects rather than inheriting from a class- What does 'favor composition over inheritance' mean?
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A design guideline suggesting object composition is often more flexible than deep inheritance
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