Using Spring IoC to set up enum values

Question

Is there a way to set up such enum values via Spring IoC at construction time?

What I would like to do is to inject, at class load time, values that are hard-coded i

Answer 1

I don't think it can be done from Spring's ApplicationContext configuration. But, do you really need it done by Spring, or can you settle for simple externalization using ResourceBundle; like this:

public enum Car
{
    NANO,
    MERCEDES,
    FERRARI;

    public final String cost;
    public final String madeIn;

    Car()
    {
            this.cost = BUNDLE.getString("Car." + name() + ".cost");
            this.madeIn = BUNDLE.getString("Car." + name() + ".madeIn");
    }

    private static final ResourceBundle BUNDLE = ResourceBundle.getBundle(...);

}

In the properties file, one for each specific locale, enter the keys describing the possible internal enum values:

Car.NANO.cost=Very cheap
Car.NANO.madeIn=India
Car.MERCEDES.cost=Expensive
...

The only drawback of this approach is having to repeat the name of enum fields (cost, madeIn) in Java code as strings. Edit: And on the plus side, you can stack all properties of all enums into one properties file per language/locale.