What is Optional object used for?
A. Optional is used for optional runtime argument
B. Optional is used for optional spring profile
C. Optional is used to represent null with absent value
D. Optional means it's not mandatory for method to return object
Answer: Option C
This Question Belongs to Java Program >> Java Autoboxing
A. The automatic conversion of primitive types to their corresponding wrapper classes
B. The process of creating a new box
C. A feature for manually converting wrapper classes to primitive types
D. A feature for boxing objects
Which primitive type corresponds to the `Integer` wrapper class in Java?
A. `char`
B. `boolean`
C. `float`
D. `int`
What is the primary benefit of autoboxing in Java?
A. It improves memory management
B. It reduces code complexity
C. It simplifies code by automatically converting between primitive types and their corresponding wrapper classes
D. It speeds up code execution
In Java, which classes are used for autoboxing and unboxing operations?
A. Exception classes (e.g., `RuntimeException`)
B. Wrapper classes (e.g., `Integer`, `Double`)
C. Collection classes (e.g., `ArrayList`, `HashMap`)
D. None of These
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