Java Enums MCQs with answers Page - 2

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Q. What will happen if you try to instantiate an enum using `new` keyword?

  • (A) It creates a new enum instance
  • (B) It results in a compile-time error
  • (C) It throws a runtime exception
  • (D) It works only inside the enum class

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Q. Which of the following is TRUE about enum constructors?

  • (A) Enum constructors must be public
  • (B) Enum constructors must be private or package-private
  • (C) Enum constructors can be protected
  • (D) Enum constructors must be static

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Q. What does the `name()` method of an enum return?

  • (A) The ordinal position
  • (B) The enum class name
  • (C) The name of the constant as a string
  • (D) The default value of the enum

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Q. Which of these methods are available for enums by default?

  • (A) toString(), valueOf(), name(), ordinal()
  • (B) equals(), hashCode(), add()
  • (C) clone(), finalize(), compareTo()
  • (D) parse(), format(), get()

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Q. Which of the following is not allowed in a Java enum?

  • (A) Implementing an interface
  • (B) Defining methods
  • (C) Extending another class
  • (D) Having instance variables

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Q. What is the output of the following code?

Code: 
enum Color { RED, GREEN, BLUE }
System.out.println(Color.RED.name());
  • (A) 0
  • (B) RED
  • (C) Color.RED
  • (D) Red

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Q. Which interface do all enums implicitly implement in Java?

  • (A) Serializable
  • (B) Cloneable
  • (C) Comparable
  • (D) Iterable

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Q. How many instances are created for each enum constant?

  • (A) Multiple per usage
  • (B) None
  • (C) Only one (singleton-like)
  • (D) Depends on how it’s called

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Q. Which method compares the ordinal values of two enum constants?

  • (A) equals()
  • (B) name()
  • (C) compareTo()
  • (D) ordinal()

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Q. What is the result of calling `toString()` on an enum constant?

  • (A) Its ordinal number
  • (B) Its name in lowercase
  • (C) Its name as declared
  • (D) It returns null

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