class Name implements Runnable {
    public void run() {
        for (int x = 1; x <= 3; x++) {
            System.out.println("Run by "
                               + Thread.currentThread().getName()
                               + ", x is " + x);
        }
    }
}
public class Threadtest {
    public static void main(String [] args) {
        // Make one Runnable
        Name nr = new Name();
        Thread one = new Thread(nr);
        Thread two = new Thread(nr);
        Thread three = new Thread(nr);
        one.setName("A");
        two.setName("B");
        three.setName("C");
        one.start();
        two.start();
        three.start();
    }
}

The answer is different while compiling and running more then one time I don't know why? any idea.