Method Reference MCQs with answers Page - 2

You will find multiple-choice questions (MCQs) related to #Method Reference here. Go through these questions to prepare effectively for your upcoming exams and interviews.

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A

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Q. Method references can be used in combination with which Java feature?

  • (A) Generics
  • (B) Streams API
  • (C) Reflection
  • (D) Serialization

A

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Q. What is the equivalent method reference for `(x, y) -> Integer.compare(x, y)`?

  • (A) Integer::parseInt
  • (B) Integer::compare
  • (C) Math::max
  • (D) Integer::valueOf

A

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Q. Which of the following is NOT a valid method reference form?

  • (A) ClassName::staticMethodName
  • (B) objectName::instanceMethodName
  • (C) ClassName::instanceMethodName
  • (D) ClassName::fieldName

A

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Q. What kind of method reference is `Thread::new`?

  • (A) Static method reference
  • (B) Instance method reference
  • (C) Constructor reference
  • (D) Field reference

A

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Q. Can method references replace lambda expressions?

  • (A) No
  • (B) Yes, when the lambda body is just a method call
  • (C) Only for static methods
  • (D) Only in Java 9 and above

A

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Q. What is the method reference equivalent of `() -> ClassName.staticMethod()`?

  • (A) ClassName::instanceMethod
  • (B) ClassName::staticMethod
  • (C) new ClassName()::staticMethod
  • (D) this::staticMethod

A

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Q. Which interface is often used with a constructor reference like `ArrayList::new`?

  • (A) Supplier
  • (B) Consumer
  • (C) Function
  • (D) Predicate

A

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Q. What kind of method reference is used in `objectName::methodName`?

  • (A) Static method reference
  • (B) Instance method reference of a specific object
  • (C) Constructor reference
  • (D) Instance method of an arbitrary object

A

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Q. Method references are part of which Java version?

  • (A) Java 6
  • (B) Java 7
  • (C) Java 8
  • (D) Java 9

A

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Q. Can a method reference refer to a method with parameters?

  • (A) No
  • (B) Yes, if compatible with the functional interface
  • (C) Only static methods
  • (D) Only constructors

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