Java Finite State Machine

Main.java

public class Main {
    public static void main(String[] args) {
        SensorState s = SensorState.One;
        s = s.run();
        s = s.run();
    }
}

SensorState.java

public enum SensorState {
    One {
        public SensorState run() {
            System.out.println("State One");
            return Two;
        }
    },
    Two {
        public SensorState run() {
            System.out.println("State Two");
            return One;
        }
    };

    abstract public SensorState run();
}