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Java: Polymorphism

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How would you explain the principle of substitutability in polymorphism in an interview?

Substitutability allows an object to be replaced with its subtype without affecting the program's correctness. Substitutability is a…

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Java: Polymorphism

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How can excessive polymorphism lead to performance issues?

Excessive polymorphism can increase method call overhead due to dynamic dispatch. While polymorphism enhances flexibility, it introduces a…

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Flashcard Study

Java: Polymorphism

Front

What role do interfaces play in polymorphism?

Interfaces allow multiple classes to implement the same method signature, enabling polymorphism. Interfaces define methods that multiple classes…

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Flashcard Study

Java: Polymorphism

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How does polymorphism enable runtime method selection in Java?

Polymorphism allows the JVM to determine the method to invoke at runtime based on the object's actual type.…

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Flashcard Study

Java: Polymorphism

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Why might you use an abstract class instead of an interface?

Abstract classes can provide default behavior and state. An abstract class can include fields and methods with implementations,…

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Flashcard Study

Java: Polymorphism

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How do interfaces promote loose coupling in Java?

Interfaces allow implementations to be swapped without altering the client code. Interfaces define a contract that can be…

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Flashcard Study

Java: Polymorphism

Front

How does dynamic method dispatch work in Java?

Java uses dynamic method dispatch to determine at runtime which method implementation to execute. Dynamic method dispatch is…

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Flashcard Study

Java: Polymorphism

Front

What role do abstract classes play in polymorphism?

Abstract classes provide a base for subclasses to build upon, supporting shared code and polymorphism. Abstract classes allow…

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Flashcard Study

Java: Polymorphism

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What are potential downsides of extensive polymorphism in design?

Extensive polymorphism can lead to increased complexity and harder-to-read code. Using polymorphism excessively might result in a complex…

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Flashcard Study

Java: Polymorphism

Front

Why might you choose an interface over an abstract class?

Interfaces allow multiple inheritance of type, providing more flexible design options. Interfaces are chosen over abstract classes when…

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