Java MCQs with answers Page - 11

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A

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Q. Which of these is correct way of inheriting class A by class B?

  • (A) class B + class A {}
  • (B) class B inherits class A {}
  • (C) class B extends A {}
  • (D) class B extends class A {}

A

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Q. Which of the following are true about interfaces.

  • (A) Methods declared in interfaces are implicitly private.
  • (B) Variables declared in interfaces are implicitly public, static, and final.
  • (C) An interface contains any number of method definitions.
  • (D) The keyword implements indicate that an interface inherits from another.

A

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Q. Which of these keywords is used to define interfaces in Java?

  • (A) interface
  • (B) Interface
  • (C) intf
  • (D) implements

A

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Q. Which of these can be used to fully abstract a class from its implementation?

  • (A) Objects
  • (B) Packages
  • (C) Interfaces
  • (D) None of the Mentione

A

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Q. Which of these access specifiers can be used for an interface?

  • (A) Public
  • (B) Protected
  • (C) private
  • (D) All of the mentioned

A

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Q. Which of these keywords is used by a class to use an interface defined previously?

  • (A) import
  • (B) Import
  • (C) implements
  • (D) Implements

A

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Q. Which of the following is correct way of implementing an interface salary by class manager?

  • (A) class Manager extends salary {}
  • (B) class Manager implements salary {}
  • (C) class Manager imports salary {}
  • (D) None of the mentioned

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Q. The keyword used to create a package is

  • (A) import
  • (B) package
  • (C) classpath
  • (D) public

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Q. The modifier which specifies that the member can only be accessed in its own class is

  • (A) public
  • (B) private
  • (C) protected
  • (D) none

A

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Q. Which of the following package stores all the standard java classes?

  • (A) lang
  • (B) java
  • (C) java.util
  • (D) java.packages

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