Anyone solved the RedLight , GreenLight, AmberLight problem? Can you please post your code?

[DikshantDulal]

No description provided.

[calvinseptyanto]

abstract class TrafficLight {
private final String color;

TrafficLight(String color) {
    this.color = color;
}

abstract TrafficLight toggle();

@Override
public String toString() {
    return this.color;
}

}

abstract class RedLight extends TrafficLight {
RedLight() {
super("red");
}

@Override
TrafficLight toggle() {
    return new GreenLight();
}

}

abstract class GreenLight extends TrafficLight {
GreenLight() {
super("green");
}

@Override
TrafficLight toggle() {
    return new AmberLight();
}

}

abstract class AmberLight extends TrafficLight {
AmberLight() {
super("amber");
}

@Override
TrafficLight toggle() {
    return new RedLight();
}

}

RedLight redLight = new RedLight() {
RedLight red = this;
@OverRide
TrafficLight toggle() {
return new AmberLight() {
@OverRide
TrafficLight toggle() {
return new GreenLight() {
@OverRide
TrafficLight toggle() {
return new AmberLight() {
@OverRide
TrafficLight toggle() {
return red;
}
};
}
};
}
};
}
};
toggling(redLight, 7);

[ghost]

If you are talking about the cyclic dependency one, you have to make the classes abstract and create anonymous inner classes.