Can anyone help me

public class Solution {
    public static void main(String[] args) {
        //write your code here
        Red red = new Red();
        red.Red();

        Orange orange = new Orange();
        orange.Orange();

        Yellow yellow = new Yellow();
        yellow.Yellow();

        Green green = new Green();
        green.Green();

        Blue blue = new Blue();
        blue.Blue();

       Indigo indigo = new Indigo();
        indigo.Indigo();

        Violet violet = new Violet();
        violet.Violet();
    }

    public static class Red {
        public Red() {
            System.out.println("Red");
        }
    }

    public static class Orange {
        public Orange() {
            System.out.println("Orange");
        }
    }

    public static class Yellow {
        public Yellow() {
            System.out.println("Yellow");
        }
    }

    public static class Green {
        public Green() {
            System.out.println("Green");
        }
    }

    public static class Blue {
        public Blue() {
            System.out.println("Blue");
        }
    }

    public static class Indigo {
        public Indigo() {
            System.out.println("Indigo");
        }
    }

    public static class Violet {
        public Violet() {
            System.out.println("Violet");
        }
    }
}