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Threads MCQs

Practice Threads MCQs for competitive exams.

Threads MCQs

Practice questions from this topic.

What will be the output of the following Java code? class newthread extends Thread { Thread t; newthread() { t = new Thread(this,"My Thread"); t.start(); } public void run() { try { t.join() System.out.println(t.getName()); } catch(Exception e) { System.out.print("Exception"); } } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }

  1. A. My Thread
  2. B. Thread[My Thread,5,main]
  3. C. Exception
  4. D. Runtime Error
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Which of these method of Thread class is used to Suspend a thread for a period of time?

  1. A. sleep()
  2. B. terminate()
  3. C. suspend()
  4. D. stop()
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Which of these method is used to implement Runnable interface?

  1. A. stop()
  2. B. run()
  3. C. runThread()
  4. D. stopThread()
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What is the default value of priority variable MIN_PRIORITY AND MAX_PRIORITY?

  1. A. 0 & 256
  2. B. 0 & 1
  3. C. 1 & 10
  4. D. 1 & 256
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What will be the output of the following Java program? class newthread extends Thread { Thread t; String name; newthread(String threadname) { name = threadname; t = new Thread(this,name); t.start(); } public void run() { } } class multithreaded_programing { public static void main(String args[]) { newthread obj1 = new newthread("one"); newthread obj2 = new newthread("two"); try { System.out.print(obj1.t.equals(obj2.t)); } catch(Exception e) { System.out.print("Main thread interrupted"); } } }

  1. A. true
  2. B. false
  3. C. Main thread interrupted
  4. D. None of the mentioned
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Which of these are types of multitasking?

  1. A. Process based
  2. B. Thread based
  3. C. Process and Thread based
  4. D. None of the mentioned
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What is the name of the thread in output in the following Java program? class multithreaded_programing { public static void main(String args[]) { Thread t = Thread.currentThread(); System.out.println(t.getPriority()); } }

  1. A. 0
  2. B. 1
  3. C. 4
  4. D. 5
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What is the name of the thread in output in the following Java program? class multithreaded_programing { public static void main(String args[]) { Thread t = Thread.currentThread(); System.out.println(t.isAlive()); } }

  1. A. 0
  2. B. 1
  3. C. true
  4. D. false
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What will happen if two thread of the same priority are called to be processed simultaneously?

  1. A. Anyone will be executed first lexographically
  2. B. Both of them will be executed simultaneously
  3. C. None of them will be executed
  4. D. It is dependent on the operating system
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Deadlock is a situation when thread is waiting for other thread to release acquired object.

  1. A. True
  2. B. False
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What will be the output of the following Java code? class newthread extends Thread { newthread() { super("My Thread"); start(); } public void run() { System.out.println(this); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }

  1. A. My Thread
  2. B. Thread[My Thread,5,main]
  3. C. Compilation Error
  4. D. Runtime Error
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What requires less resources?

  1. A. Thread
  2. B. Process
  3. C. Thread and Process
  4. D. Neither Thread nor Process
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