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From Daniel Rall <...@finemaltcoding.com>
Subject Re: DBCP/LANG
Date Mon, 12 Aug 2002 20:57:07 GMT
"Juozas Baliuka" <baliuka@centras.lt> writes:

> <snip>
> > > Sorry, my misunderstanding. As Ola pointed out [rather
> > > cryptically] the
> > > Enum is from the C meaning and not the Enumeration Java meaning. An
> > > ordered set of constant values.
> >
> > Not necessarily ordered. An Enum of colours, for example, in most cases
> > would not have a defined ordering.
> >
> > > They seem to be a feature often grumbled about not being in
> > > Java and often
> > > recreated by coders in Java, so a useful Commons feature.
> >
> > Definitely. The key reason that people create these, I believe, is type
> > safety (which is not one of the features of C enums).
> 
> Is it some way to implement C style or  type safe C ++ and PASCAL style
> enums
> in JAVA ? JAVA developers use "final int RED=0x000000FF" and I do not see
> any ways to implement something like this :
> 
>  enum Color
>         {
>                      black,
>                       red    = 0x000000FF,
>                       green = 0x0000FF00,
>                       blue   = 0x00FF0000,
>                       white = red | green | blue
>        };
> 
> Is it some "wrappers" ?

I recall someone (Henri, I think) checking in a class to help make
type-safe constants like this a while back.  Don't know where it's
living now.

-- 

Daniel Rall <dlr@finemaltcoding.com>

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