Enums

public final class Color {
    //
    private static final List<Color> colors = new ArrayList<>();
    public static final Color RED = new Color();
    public static final Color GREEN = new Color();
    private final int ordinal;
    private final String name;

    private Color() {
        this.ordinal = colors == null ? 0 : colors.size();
        this.name = Arrays.stream(this.getClass().getDeclaredFields()).filter(f -> f.getType()==Color.class).filter(f -> {
                    try {
                        return f.get(this) == this;
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    }
                    return false;
                }).map(Field::getName).findFirst().orElseThrow();

        colors.add(this);
    }

    public int getOrdinal() {
        return ordinal;
    }

    public String getName() {
        return name;
    }
}