Java MCQ: What is the primary purpose of the Java Reflection API?
Answer:
Explanation:
The Java Reflection API is a powerful feature of the Java programming language that allows for the dynamic inspection and manipulation of classes, methods, fields, and constructors at runtime. This capability is particularly useful in scenarios where the code needs to operate on classes and objects that were not known at compile-time.
Reflection enables developers to access information about a class’s structure, including its fields, methods, and constructors. It also allows for the invocation of methods, modification of fields, and creation of new instances of classes dynamically. This makes it possible to write more flexible and reusable code, as the same piece of code can work with different classes and methods without knowing their specifics at compile-time.
Some common use cases for reflection include frameworks like Hibernate and Spring, which use reflection to discover and manipulate classes at runtime. Reflection is also widely used in testing frameworks like JUnit, where it is used to invoke test methods dynamically. However, while reflection offers great flexibility, it can also introduce performance overhead and security risks if not used carefully.
Overall, the primary purpose of the Java Reflection API is to enable the dynamic inspection and manipulation of classes, methods, and fields at runtime, making it an essential tool for advanced Java programming.
Reference links:
https://www.rameshfadatare.com/learn-java-programming/
https://www.javaguides.net/p/java-tutorial-learn-java-programming.html