Flashcards

Quick study sessions to strengthen memory and retain key concepts.

Flashcard Study

Java: Object Responsibility

Front

Why is it important to keep behavior with the data it operates on?

To ensure high cohesion and maintainability. Keeping behavior with its data enhances cohesion, making classes more understandable and…

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Flashcard Study

Java: Object Responsibility

Front

Why does encapsulation in OOP matter in practice?

To hide internal details and expose only necessary parts. Encapsulation helps manage complexity by hiding the internal workings…

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Flashcard Study

Java: Object Responsibility

Front

Why should a CartItem class reference a Product rather than copy its details?

To ensure consistency and reduce redundancy. By referencing a `Product` object, a `CartItem` can always access the most…

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Flashcard Study

Java: Object Responsibility

Front

How does encapsulation aid in maintaining object invariants?

By controlling access to fields through methods. Encapsulation allows a class to enforce rules about its data. For…

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Flashcard Study

Java: Object Responsibility

Front

Why can a class with too many responsibilities become a real problem?

It becomes difficult to maintain and understand. A class with too many responsibilities can lead to code that's…

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Flashcard Study

Java: Object Responsibility

Front

What is immutability and why is it beneficial?

Immutability means object's state cannot change after creation. Immutable objects provide thread-safety and reduce bugs related to state…

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Flashcard Study

Java: Object Responsibility

Front

How can encapsulation help avoid anemic objects?

By keeping behavior and data together. Frame the concept in practical terms so you can explain it during…

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Flashcard Study

Java: Object Responsibility

Front

Why does a constructor in maintaining class invariants matter in this design?

A constructor initializes object state and enforces invariants. Constructors are responsible for setting up an object in a…

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Flashcard Study

Java: Object Responsibility

Front

Why should fields in a class be private?

To protect the internal state from external modification. Using private fields ensures that the internal state of an…

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Flashcard Study

Java: Object Responsibility

Front

Why should validation be part of the constructor in some cases?

Constructor validation ensures objects are created in a valid state. Including validation within a constructor prevents the creation…

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