Threads Questions and Answers
Threads in Java enable concurrent execution of multiple tasks, improving program efficiency and responsiveness. This concept is frequently tested in programming questions and answers and Java MCQs during placement drives by TCS, Infosys, and Wipro. Understanding thread creation, synchronization, and lifecycle is crucial for handling multitasking in software applications. Practicing Java programming interview questions with answers on threads enhances students’ understanding of concurrency, helping them tackle real-world programming challenges confidently. Knowledge of threads also plays a vital role in acing technical interviews and coding assessments.
Threads
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15 questions
11. Which method registers a thread in a thread scheduler?
- run();
- construct();
- start();
- register();
12. 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?
- After thread A is notified, or after two seconds.
- After the lock on B is released, or after two seconds.
- Two seconds after thread A is notified.
- Two seconds after lock B is released.
13. Which of the following will not directly cause a thread to stop?
- notify()
- wait()
- InputStream access
- sleep()
14. Which class or interface defines the wait(), notify(),and notifyAll() methods?
- Object
- Thread
- Runnable
- Class
15. public class MyRunnable implements Runnable { public void run() { // some code here } } which of these will create and start this thread?
- new Runnable(MyRunnable).start();
- new Thread(MyRunnable).run();
- new Thread(new MyRunnable()).start();
- new MyRunnable().start();