public class Playground {

    static class Safe {
        private final int value;

        public Safe(int value) {
            this.value = value;
        }
    }

    static class IsItSafe {
        private /* volatile */ Safe safe;

        public int get(){
            return safe.value;
        }

        public void set(int value) {
            safe = new Safe(value);
        }
    }

    private static /* volatile */ IsItSafe sharedData = new IsItSafe();

    public static void main(String[] args) {

        new Thread(new Runnable() {
            @Override
            public void run() {
                int counter = 0;
                while (counter < Integer.MAX_VALUE) {
                    counter++;
                    sharedData.set(counter);
                }
                System.out.printf("[T1] Shared data visible here is %d\n", sharedData.get());
            }
        }).start();

        new Thread(new Runnable() {
            @Override
            public void run() {
                int locallyRead = Integer.MIN_VALUE;
                while (sharedData.get() < Integer.MAX_VALUE) {
                    locallyRead = sharedData.get();
                }
                System.out.printf("[T2] Last read value here is %d\n[T2] Shared data visible here is %d\n", locallyRead, sharedData.get());
            }
        }).start();

    }

}