Flashcards

Quick study sessions to strengthen memory and retain key concepts.

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Java: Breaking Encapsulation

Front

What role does 'setAccessible(true)' play in accessing private fields?

'setAccessible(true)' allows access to private fields. By default, Java enforces encapsulation, preventing access to private fields. However, using…

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Java: Breaking Encapsulation

Front

How does Java's Reflection API enable dynamic inspection of classes?

Reflection allows you to inspect classes, methods, and fields at runtime. Java's Reflection API provides the ability to…

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Flashcard Study

Java: Breaking Encapsulation

Front

What common mistake should you avoid when using setAccessible?

Forgetting to check security manager policies. When using `setAccessible(true)`, if a security manager is present and denies the…

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Flashcard Study

Java: Breaking Encapsulation

Front

What does MethodHandles provide over Reflection?

A faster, more flexible API for handling methods and fields. `MethodHandles` offer a way to perform method and…

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Flashcard Study

Java: Breaking Encapsulation

Front

How do RetentionPolicies affect Annotation Processing?

RetentionPolicies determine when annotations are available. `RetentionPolicy.RUNTIME` keeps annotations available at runtime, essential for frameworks that use reflection…

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Flashcard Study

Java: Breaking Encapsulation

Front

What are the performance trade-offs of using Reflection?

Reflection is slower and less efficient than direct method calls. Reflection involves types and method lookups at runtime,…

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Flashcard Study

Java: Breaking Encapsulation

Front

Why does Class.forName in Reflection matter in this design?

It loads a class dynamically at runtime. Frame the concept in practical terms so you can explain it…

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Flashcard Study

Java: Breaking Encapsulation

Front

Why might a mini-framework use Reflection to access private fields?

To map data without exposing internal structures. A mini-framework might use reflection to map database records to objects…

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Flashcard Study

Java: Breaking Encapsulation

Front

What challenges arise with dynamic method invocation using Reflection?

Handling exceptions and managing method parameters. When invoking methods dynamically, you must handle `InvocationTargetException` and ensure the method…

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Flashcard Study

Java: Breaking Encapsulation

Front

What class in Java provides the Reflection API?

The java.lang.reflect package. Frame the concept in practical terms so you can explain it during interview discussion. The…

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