Flashcards

Quick study sessions to strengthen memory and retain key concepts.

Flashcard Study

Java: Controlled Mutation

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How would you explain the real point of controlled mutation in an interview?

State changes happen through meaningful methods that can enforce rules. A method like `reserve(...)` or `restock(...)` says what…

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Java: Constructors

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What are the pitfalls of not using constructor parameters to initialize fields?

Not using constructor parameters can leave fields uninitialized or misleadingly initialized. If you do not use constructor parameters…

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Flashcard Study

Java: Constructors

Front

Why is a constructor crucial in creating a complete object?

Constructors ensure the object is initialized with necessary values. Constructors provide a way to create a fully functional…

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Flashcard Study

Java: Constructors

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Why does a constructor setting default values change runtime behavior?

It ensures the object starts in a valid state. Setting default values in a constructor ensures an object…

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Flashcard Study

Java: Constructors

Front

What design pattern uses private constructors?

Singleton pattern. Frame the concept in practical terms so you can explain it during interview discussion. The Singleton…

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Flashcard Study

Java: Constructors

Front

Why can not providing a default constructor become a real problem?

You can only create objects using constructors with parameters. If no default constructor is provided, and only parameterized…

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Flashcard Study

Java: Constructors

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Can a constructor call another constructor in the same class?

Yes, using `this()`. Frame the concept in practical terms so you can explain it during interview discussion. Constructor…

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Flashcard Study

Java: Constructors

Front

Why is complex logic in a constructor a problem?

It can make object creation error-prone and hard to maintain. Including complex logic in constructors can lead to…

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Flashcard Study

Java: Constructors

Front

What is constructor overloading?

Defining multiple constructors with different parameter lists. Constructor overloading allows a class to have multiple ways to initialize…

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Flashcard Study

Java: Constructors

Front

How does a constructor differ from a method?

A constructor initializes new objects, a method performs operations. While both constructors and methods are blocks of code…

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