Software Engineering › Key terms › Y11 OOP › Message passing
Message passing
Term Y11 OOP
Definition
Objects communicate by calling each other's methods (sending a message with parameters and receiving a return value).
Example: order.addItem(item) sends the message addItem to the order object.
Found in: syllabus, course specifications.
Where it is used in the test
Syllabus area: Y11 OOP.
Question types it can appear in
- Multiple choice: Pick the option that matches the definition or example.
- Short answer: Investigate how OOP languages handle message passing
- Code reading: Code or algorithm reading: interpret a fragment and state its output or purpose.
No past question in this bank is linked to this term yet. It can still be tested through the question types above.
Study links
- Flashcard: Message passing in The Object-Oriented Paradigm (Year 11) · study that set
- Memorise: Object-oriented concepts
- Notes: Programming paradigms (Year 11 content (Programming fundamentals, OOP, Mechatronics))
- Notes: Object-oriented concepts (Year 11 content (Programming fundamentals, OOP, Mechatronics))
- Notes: Python OOP: classes, inheritance, polymorphism, encapsulation (Python and SQL you must be able to write)
How to use it in an answer
A model sentence
“Objects communicate by calling each other's methods (sending a message with parameters and receiving a return value).” Then apply it: order.addItem(item) sends the message addItem to the order object.
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
No linked question shows the command word for this term. Across the past short answer questions in this bank the words used most are: Explain, Outline, Describe, Compare, Classify, Analyse. Check the actual word in your question.
Technique for the question types
- Multiple choice: Read all four options, rule out wrong ones, pick one; no penalty for guessing so never leave blank.
- Short answer: One clear point per mark, use the stimulus and course terms, and answer the command word.
Common mistakes
- Use the term exactly as the syllabus words it, then link it to the scenario in the question; the 2025 feedback repeatedly rewards using the stimulus.
- Answer the command word: outline gives main points only, explain gives a reason or cause, discuss gives both sides.
Related terms
Same group in the syllabus: Object-oriented programming (OOP) · Class · Object · Attribute · Method · Constructor (__init__) · Encapsulation · Abstraction · Inheritance · Generalisation · Superclass and subclass · Polymorphism · Method overriding · Procedural programming v OOP