Java MCQs with answers Page - 28

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Q. When does Exceptions in Java arises in code sequence?

  • (A) Run Time
  • (B) Compilation Time
  • (C) Can Occur Any Time
  • (D) None of the mentioned

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Q. What is multithreaded programming?

  • (A) It’s a process in which two different processes run simultaneously.
  • (B) Its a process in which two or more parts of same process run simultaneously.
  • (C) Its a process in which many different process are able to access same information.
  • (D) Its a process in which a single process can access information from many sources.

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Q. Which of these are types of multitasking?

  • (A) Process based multitasking
  • (B) Thread based multitasking
  • (C) Both a & b
  • (D) None of the mentioned

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Q. Which of these packages contain all the Java’s built in exceptions?

  • (A) java.io
  • (B) java.util
  • (C) java.lang
  • (D) java.net

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Q. Thread priority in Java is?

  • (A) Integer
  • (B) Float
  • (C) Double
  • (D) Long

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Q. What will happen if two thread of same priority are called to be processed simultaneously?

  • (A) Any one will be executed first lexographically
  • (B) Both of them will be executed simultaneously
  • (C) None of them will be executed
  • (D) It is dependent on the operating system.

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Q. Which of these statements is incorrect?

  • (A) By multithreading CPU’s idle time is minimized, and we can take maximum use of it.
  • (B) By multitasking CPU’s idle time is minimized, and we can take maximum use of it.
  • (C) Two thread in Java can have same priority
  • (D) A thread can exist only in two states, running and blocked.

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Q. Which method executes only once

  • (A) start() method
  • (B) init() method
  • (C) stop() method
  • (D) destroy() method

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Q. Thread class is available in

  • (A) java.io package
  • (B) java.lang package
  • (C) java.awt package
  • (D) java.util package

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Q. Minimum threads in a program are

  • (A) 1
  • (B) 2
  • (C) 5
  • (D) Many

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