Quiz 6

Consider the below class:

public class MemoryVisibility {

    int myvalue = 2;
    boolean done = false;

    void thread1() {

        while (!done);
        System.out.println(myvalue);

    }

    void thread2() {

        myvalue = 5;
        done = true;
    }
}

We create an object of the above class and have two threads run each of the two methods like so:

        MemoryVisibility mv = new MemoryVisibility();

        Thread thread1 = new Thread(() -> {
            mv.thread1();
        });

        Thread thread2 = new Thread(() -> {
            mv.thread2();
        });

        thread1.start();
        thread2.start();

        thread1.join();
        thread2.join();

What will be the output by thread1?