Java Multithreading Questions and Answers

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

[A] String

[B] System

[C] Thread

[D] Runnable

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2. Which of these interface is implemented by Thread class?

[A] Runnable

[B] Connections

[C] Set

[D] MapConnections

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3. Which function of pre defined class Thread is used to check weather current thread being checked is still running?

[A] isAlive()

[B] Join()

[C] isRunning()

[D] Alive()

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4. What is the output of this program?



    class multithreaded_programing {

        public static void main(String args[]) {

            Thread t = Thread.currentThread();

            t.setName("New Thread");

            System.out.println(t);        

        }

    }

[A] Thread[5,main]

[B] Thread[New Thread,5]

[C] Thread[main,5,main]

[D] Thread[New Thread,5,main]

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5. What is the priority of the thread in output of this program?



 class multithreaded_programing {

        public static void main(String args[]) {

            Thread t = Thread.currentThread();

            t.setName("New Thread");

            System.out.println(t.getName());        

        }

    }

[A] main

[B] Thread

[C] New Thread

[D] Thread[New Thread,5,main]

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6. What is the name of the thread in output of this program?



    class multithreaded_programing {

        public static void main(String args[]) {

            Thread t = Thread.currentThread();

            System.out.println(t.getPriority());        

        }

    }

[A] 0

[B] 1

[C] 4

[D] 5

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7. Which methods are utilized to control the access to an object in multi threaded programming

[A] Asynchronized methods

[B] Synchronized methods

[C] Serialized methods

[D] None of above

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8. Which of the following is used to force each thread to reconcile its working copy of a variable with the master copy in main memory?

[A] synchronized

[B] transient

[C] volatile

[D] native

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9. What is multithreaded programming?

[A] It’s a process in which two different processes run simultaneously.

[B] It’s 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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10. Which of these are types of multitasking?

[A] Process based

[B] Thread based

[C] Process and Thread based

[D] None of the mentioned

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Java Multithreading Questions and Answers

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