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Groups > comp.lang.java.programmer > #3139

Re: Double always returning 0.0

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Jason S <jasonsavlov@me.com> wrote:
> On 2011-04-19 11:18:10 -0400, Lew said:
>> Jason S wrote:
>>> Yup, that was the problem. Got it working! (Sort of...) The weight for the cat
>>> keeps turning up as 0.000.
>> What does your code look like now?
> http://web.cs.sunyit.edu/~savlovj/CS249/pg472_8
> The code is there in full

So, now you initialize both sets of variables from the new
subclass methods.  That looks quite goofy to me.  Why not just
use Pet's variables and use baseclass' public getWeight() to
access baseclass' private weight for calculations?

   public double acepromazine() {
      return ((getWeight() / 2.2) * (0.002 / 10.0));
   }

And then remove each subclass' copies of those fields altogether.

I'd expect that whereever the remaining bug really hides, it will
either show up, or silently disappear once you get the fields sane.


Btw., normally one would throw exceptions rather than exit the 
process with System.exit, but even if you really want to exit 
the process, you most likely don't want to exit with a zero
exit-status. A zero exit-status from a process is typically
meant as "success", but that obviously isn't the case where
you call System.exit(0).

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Double always returning 0.0 Jason S <jasonsavlov@me.com> - 2011-04-18 20:05 -0400
  Re: Double always returning 0.0 markspace <-@.> - 2011-04-18 17:43 -0700
  Re: Double always returning 0.0 Jim <jkorman@alltel.net> - 2011-04-18 20:11 -0500
  Re: Double always returning 0.0 Screamin Lord Byron <scre@min.dot> - 2011-04-19 11:02 +0200
    Re: Double always returning 0.0 Jason S <jasonsavlov@me.com> - 2011-04-19 11:16 -0400
      Re: Double always returning 0.0 Lew <noone@lewscanon.com> - 2011-04-19 11:18 -0400
        Re: Double always returning 0.0 Jason S <jasonsavlov@me.com> - 2011-04-19 11:20 -0400
          Re: Double always returning 0.0 Lew <noone@lewscanon.com> - 2011-04-19 11:57 -0400
          Re: Double always returning 0.0 Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-04-19 16:04 +0000
            Re: Double always returning 0.0 Jason S <jasonsavlov@me.com> - 2011-04-19 17:22 -0400
          Re: Double always returning 0.0 Screamin Lord Byron <scre@min.dot> - 2011-04-19 19:08 +0200
          Re: Double always returning 0.0 Lew <noone@lewscanon.com> - 2011-04-19 14:03 -0400
            Re: Double always returning 0.0 Lew <noone@lewscanon.com> - 2011-04-19 14:06 -0400
            Re: Double always returning 0.0 Jason S <jason.savlov@gmail.com> - 2011-04-20 13:53 -0400
              Re: Double always returning 0.0 Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-04-20 18:06 +0000
                Re: Double always returning 0.0 Lew <noone@lewscanon.com> - 2011-04-20 14:11 -0400
                Re: Double always returning 0.0 Jason S <jason.savlov@gmail.com> - 2011-04-20 14:19 -0400
                Re: Double always returning 0.0 Lew <noone@lewscanon.com> - 2011-04-20 14:29 -0400
                [OT] Re: Double always returning 0.0 Stanimir Stamenkov <s7an10@netscape.net> - 2011-04-21 07:30 +0300
      Re: Double always returning 0.0 Screamin Lord Byron <scre@min.dot> - 2011-04-19 19:05 +0200
  Re: Double always returning 0.0 Jason S <jasonsavlov@me.com> - 2011-04-19 13:07 -0400
  Re: Double always returning 0.0 Roedy Green <see_website@mindprod.com.invalid> - 2011-04-19 16:30 -0700

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