Practice›Java Fundamentals›Module 11. Modern Java›11.1 Enums

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11.1 Enums — declare an enum

Total: 0 / 3 pts

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Task

Write the enum TrafficLight with exactly three constants: RED, YELLOW, GREEN, in that order.

main checks them: the program prints 3, RED, 2 — the count, the constant found by name, and the position of GREEN (positions start at 0).

Your solution

enum TrafficLight {
    // the three constants, separated by commas

}

public class Main {
    public static void main(String[] args) {
        System.out.println(TrafficLight.values().length);
        System.out.println(TrafficLight.valueOf("RED"));
        System.out.println(TrafficLight.GREEN.ordinal());
    }
}

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