Helge Hartmann wrote:
>Now I have a combo, where someone can choose one of these values. Because I
>don't want to use the toString() method, I have a String array, holding the
>values for the combo. But I don't have an idea how to create a good
>mapping, because it must work in both directions. At the moment I am using
>switch statements for the mapping. But this seems error prone, when
>changing something. There must be a better way.
I had to track down a vaguely remembered article, but another possible idea
is to use the extended features of Java enum types, which are more than
mere integers. Java enums have a class, a type, methods, and can be
defined to implement extended behavior. Each defined enum type (your
Vulnerability class) also has a static values() method that returns an
ordered array of all enumerable values. This suggests dealing with the
type itself in the model, rather than treating the values like plain C/C++
integers.
The article I was looking for is here:
<http://java.sun.com/j2se/1.5.0/docs/guide/language/enums.html>
It's linked from here:
<http://java.sun.com/j2se/1.5.0/docs/guide/language/index.html>
I found those by searching Sun's site for these keywords:
enum tutorial
You can probably find additional information and ideas by googling for:
java enum tutorial
-- GG
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