Mcq On Java Threads

1. What is the name of the method used to start a thread execution?

A. run();
B. init();
C. start();
D. resume();

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2.Which cannot directly cause a thread to stop executing?

A. Calling the SetPriority() method on a Thread object.
B. Calling read() method on an InputStream object.
C. Calling notify() method on an object.
D. Calling the wait() method on an object.

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3. Which of the following will directly stop the execution of a Thread?

A. notify()
B. notifyall()
C. wait()
D. exits synchronized code

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

A. isAlive()
B. Alive()
C. isRunning()
D. Join()

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5. Which method must be defined by a class implementing the java.lang.Runnable interface?

A. public void run()
B. void run()
C. void run(int priority)
D. public void start()

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6. Assume the following method is properly synchronized and called from a thread A on an object B:
wait(2000);
After calling this method, when will the thread A become a candidate to get another turn at the CPU?

A. After thread A is notified, or after two seconds.
B. Two seconds after thread A is notified.
C. After the lock on B is released, or after two seconds.
D. Two seconds after lock B is released.

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7.Which will contain the body of the thread?

A. main();
B. stop();
C. start();
D. run();

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8. Which class or interface defines the wait(), notify(),and notifyAll() methods?

A. Object
B. Class
C. Runnable
D. Thread

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

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

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10.Which of these method of Thread class is used to Suspend a thread for a period of time?

A. stop()
B. sleep()
C. terminate()
D. suspend()

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