Java MCQs with answers Page - 17

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Q. Which is the super class of all exception classes

  • (A) Exception
  • (B) Object
  • (C) Error
  • (D) Throwable

A

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Q. Which class is the super class of all classes of the java.lang package?

  • (A) Object
  • (B) System
  • (C) Super
  • (D) Class

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Q. Which of the following exception is raised when a number is divided by zero

  • (A) NumberFormatException
  • (B) ArithmeticException
  • (C) NullPointerException
  • (D) IllegalArgumentException

A

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Q. A single try block must be followed by which of these?

  • (A) finally
  • (B) catch
  • (C) catch or finally
  • (D) None of the mentioned

A

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Q. Runnable is a

  • (A) Class
  • (B) Method
  • (C) Variable
  • (D) Interface

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Q. Thread priority in Java is represented as?

  • (A) int
  • (B) Float
  • (C) double
  • (D) long

A

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Q. Which of these class is used to make a thread?

  • (A) String
  • (B) System
  • (C) Thread
  • (D) Runnable

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Q. Which of these interface is implemented to create a Thread?

  • (A) Runnable
  • (B) Connections
  • (C) Set
  • (D) MapConnections

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Q. Which of these method of Thread class is used to find out the priority given to a thread?

  • (A) get()
  • (B) ThreadPriority()
  • (C) getPriority()
  • (D) getThreadPriority()

A

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Q. Which of this method of Thread class is used to change the state of a thread to blocked state?

  • (A) sleep()
  • (B) terminate()
  • (C) stop()
  • (D) block()

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