Question

Assigning responsibilities to classes

     Assigning responsibilities to
classes

Computer Science Illuminated

Computer Science Illuminated

Dale Nell, Lewis… 7th Edition

Chapter 9, Problem 3

Instant Answer

Solved by Expert Aditya Sood

06/25/2020

Step 1

Identify the problem domain: Understand the problem you are trying to solve and the system you are building. This will help you identify the main components and functionalities required in your system. Show more…

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Assigning responsibilities to classes

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Key Concepts

Responsibility-Driven Design

This is an approach to object-oriented design that focuses on defining and assigning responsibilities to individual classes and objects. The goal is to ensure that each component of the system has a clear purpose and communicates effectively with other components, making the overall system more understandable, flexible, and maintainable.

Single Responsibility Principle

This principle states that a class should have only one reason to change, meaning it should only have one job or responsibility. By adhering to this principle, designers can create more modular and cohesive systems where changes in one area have minimal impact on others.

Information Expert

The Information Expert principle guides developers in assigning responsibilities to the class that has the most relevant information needed to perform a given task. This promotes efficient and logical distribution of tasks, ensuring that responsibilities are managed by the most appropriate parts of a system.

Cohesion

Cohesion measures how closely related and focused the responsibilities of a single class are. High cohesion means that the class’s methods and attributes are directly related to its core responsibility, which enhances maintainability and reusability.

Coupling

Coupling refers to the degree of interdependence between different classes or modules. Low coupling is desirable because it minimizes the reliance between classes, making the system more modular and easier to modify or extend without affecting other parts of the system.

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