Select the correct answerWhich of this method can be used to make the main thread to be executed last among all the threads?Optionsjoin()sleep()stop()call()

Analysis of Options

1. join(): The join() method is used to pause the execution of the main thread until the thread that called join() terminates. If you use join() on all other threads before proceeding in the main thread, the main thread will effectively be executed after all other threads have finished.

2. sleep(): The sleep() method pauses the execution of the current thread for a specified duration. While it can delay the main thread, it does not guarantee that it will execute last among all threads. Other threads may continue to run concurrently.

3. stop(): The stop() method is deprecated and unsafe to use. It forces a thread to stop its execution and can lead to resource inconsistency or corruption. It doesn't control the order of thread execution and should not be used.

4. call(): This option seems to be a misunderstanding; typically, in a multithreading context, you use call() in the context of Callable tasks, but it does not serve to control the execution order in the same manner as join().

Final Answer

The correct answer is join(). This method can be used to ensure the main thread executes last among all threads by waiting for other threads to finish before resuming execution in the main thread.