public class EscapeRunner {

    private static MyClass obj;

    public static void main(String[] args) {
        refreshObject();

        final AtomicBoolean stopFlag = new AtomicBoolean();

        Thread writer = new Thread(new Runnable() {
            @Override public void run() {
                while (!stopFlag.get())
                    refreshObject();
            }
        });

        Thread reader = new Thread(new Runnable() {
            @Override public void run() {
                while (!stopFlag.get()) {
                    MyClass regularObj = obj;

                    regularObj.use();
                }
            }
        });

        writer.start();
        reader.start();
    }

    private static void refreshObject() {
        obj = new MyClass();
    }

    private static class MyClass {
        private Object obj1;
        private Object obj2;

        private MyClass() {
            this.obj1 = new Object();
            this.obj2 = new Object();
        }

        private int use() {
            Object o1 = obj1;
            Object o2 = obj2;

            return o1.hashCode() + o2.hashCode();
        }
    }
}

public class Test {
    private static MyClass obj = new MyClass();

    public static void main(String[] args) {
        Thread writer = new Thread(new Runnable() {
            public void run() {
                while (true)
                    obj = new MyClass();
            }
        });

        Thread reader = new Thread(new Runnable() {
            public void run() {
                while (true)
                    obj.use();
            }
        });

        writer.start();
        reader.start();
    }

    private static class MyClass {
        private Object obj1;
        private Object obj2;

        private MyClass() {
            this.obj1 = new Object();
            this.obj2 = new Object();
        }

        private int use() {
            return obj1.hashCode() + obj2.hashCode();
        }
    }
}