Polymorphism

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Definition

Different classes provide their own version of the same method name, so one call behaves differently depending on the object.

Example: speak() prints Woof for Dog and Meow for Cat.

Found in: syllabus, course specifications, school notes, past SDD papers.

Short version to memorise (key terms bank)

Same method name, different behaviour per class.

Where you'll use it in the test

Syllabus area: Y11 OOP.

Question types it can appear in

Multiple choice: Pick the option that matches the definition or example.
Python: override a method
Code reading: Code or algorithm reading: interpret a fragment and state its output or purpose.
Short answer: Define, outline or explain it and tie it to the scenario.

How to use it

A model sentence

General advice, built from the definition and example above

“Different classes provide their own version of the same method name, so one call behaves differently depending on the object.” Then apply it: speak() prints Woof for Dog and Meow for Cat.

In a short answer, give the definition in your own words first, then tie it to the situation in the question. Do not copy the example above unless it fits the scenario.

Command words used with it

General advice

No linked question shows the command word for this term. Across the past python and short answer questions in this bank the words used most are: Explain, Outline, Describe, Compare, Classify, Analyse. Check the actual word in your question.

Go deeper

Flashcard: Polymorphism in The Object-Oriented Paradigm (Year 11) · study that set
Memorise: Object-oriented concepts
Key terms bank entry: Polymorphism
Notes: Polymorphism (Year 11 content (Programming fundamentals, OOP, Mechatronics))
Notes: Python OOP: classes, inheritance, polymorphism, encapsulation (Python and SQL you must be able to write)
Notes: Design, develop and apply ML regression models using an OOP to predict numeric values,… (Software Automation (Year 12))
Full term page: every question, note and marking comment for Polymorphism

Check yourself

Explain “Polymorphism” in one sentence, give an example, and name a question type that could test it.

Reveal the answer

Different classes provide their own version of the same method name, so one call behaves differently depending on the object.

Example: speak() prints Woof for Dog and Meow for Cat.

Could be tested as: Multiple choice, Python, Code reading, Short answer.