Mini Project - Enum

package trafficLights;

public enum TrafficLight {

    //Enums should be in Uppercase letters
    RED ("Stop"),
    YELLOW ("Wait"),
    GREEN ("Go");

    private String action;

    //Enum constructor can only be private or default
    private TrafficLight(String action) {
        this.action = action;
    }

    //getter
    public String getAction() {
        return action;
    }
}
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package trafficLights;

public class TrafficLightTester {

    public static void main(String[] args) {

        TrafficLight[] lights = TrafficLight.values();

        //for-each loop access Enum elements
        for (TrafficLight light : lights) {
            System.out.println("Light: " +light.name() + " --- " +
                    "Action: " + light.getAction());
        }
        //use light.toString() can also give the same output
    }
}