Class As A Enum In Java

Color.java

public class Color {

    public static final  Color RED = new Color("RED");
    public static final  Color WHITE = new Color("WHITE");
    public static final  Color BLUE = new Color("BLUE");
    public static final  Color GREEN = new Color("GREEN");

    private String color;

    static {
        System.out.println(1);
    }

    {
        System.out.println(2);
    }

    private Color(String color){
        System.out.println(3);
        this.color = color;
        System.out.println(color);
    }

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

    public static void main(String[] args) {
        Color color =  Color.BLUE;
        System.out.println(color);
    }

}