Equivalent of public static final fields in Scala
- by JT
I'm learning Scala, and I can't figure out how to best express this simple Java class in Scala:
public class Color {
public static final Color BLACK = new Color(0, 0, 0);
public static final Color WHITE = new Color(255, 255, 255);
public static final Color GREEN = new Color(0, 0, 255);
private static final int red;
private static final int blue;
private static final int green;
public Color(int red, int blue, int green) {
this.red = red;
this.blue = blue;
this.green = green;
}
// getters, et cetera
}
The best I have is the following:
class Color(val red: Int, val blue: Int, val green: Int)
object BLACK extends Color(0, 0, 0)
object WHITE extends Color(255, 255, 255)
object GREEN extends Color(0, 0, 255)
But I lose the advantages of having BLACK, WHITE, and GREEN being tied to the Color namespace.
