[ajug-members] design theory

Gary Marshall gwjm56 at gmail.com
Mon May 5 08:53:01 EDT 2008 

This is great, however, I would pay Mcdaniel $10 to explain the same concept
to me using traditional Java OO concepts, not using Spring or Junit.
g


On 5/5/08, 521 <521 at ofig.org> wrote:
>
>  cool-beans jeff- tks  :)
>
> *On Sun, 4 May 2008 20:30:31 -0500, Bentley, Jeff wrote*
> > Ok. I'll bite.
> >
> > Imagine you have some service you need to implement called
> > NuclearWeaponControl.
> > It has one method called "public void detonate(GPSCoordinates
> > coordinates) throws CantDetonateException".
> > The method is supposed to throw the exception in 500 different
> > situations.
> >
> > You are given a Class call Bomb with one method named
> > blowUp(GPSCoordinates coordinates) that will explode a bomb at the given
> > position.
> >
> > Cool. So you write a class called NuclearWeaponContol with the detonate
> > method that calls Bomb.blowup(..)  and are feeling like a stud.
> >
> > Boss says... Yo dude... Have you tested that method out to make sure
> > that it works to the specs?
> > Mcdaniels says.... Uh.... No... Can I detonate a few bombs to check it
> > out?
> > Boss says... No
> >
> > In walks the high priced spring advocate that says... No problem. I can
> > write some code to test that method behavior with out actually firing
> > off a nuke.
> >
> > Boss fires Mcdaniel and hires the spring advocate.
> >
> > Spring advocate then extracts an interface called BombInterface from the
> > class Bomb.
> > Spring advocate uses spring to inject a TEST implementation of the
> > BombInterface into future test cases.
> > The TEST implementation of BombInterface is called BombTest.
> > Spring advocate then writes a series of junit tests to exercise
> > NuclearWeaponControl that uses the injected BombTest vs Bomb.
> >
> > The spring advocate gets hungry and orders a pizza. Mcdaniel delivers
> > the hot pizza and gets a $10 tip from the high priced spring advocate.
> > :-)
> >
> > The spring advocate finishes 500+ junit tests that exercise the 500
> > exception situations defined in the requirements and banks the check
> > from the boss.
> >
> > The boss is happy, the spring advocate is happy, the interface newbie
> > learns a lessson,
> > jeff
> >
> > -----Original Message-----
> > From: mcdaniel [mailto:521 at ofig.org]
> > Sent: Sunday, May 04, 2008 5:51 PM
> > To: ajug-members at ajug.org
> > Subject: [ajug-members] design theory
> >
> > can someone tell me what design to an interface means- what i mean by
> > this is that i know what it means by definition- because i read about it
> > often- most oop examples are oak tree extends tree, implements growable,
> > and then tree extends plantae... etc -then i see lots of  code right up
> > front as extends jframe, extends awprx.border etc; so...  and this may
> > be basic'ish, but what's a persons' example of design to the
> > interface(s); by the way- i am enjoying learning java (i've programmed
> > for years, but it has all been procedural) and tks for any (theory)input
> > [i think that i just casted theory-traits onto what was an 'input'
> > object]
> >
> > Shivraj Patil wrote:
> > > answer is Spring oriented.
> > > Design using Interfaces than Classes,
> > > it gives us multiple inheritance and polymorphism benefit.
> > > Enjoy!
> > >
> > > On Fri, May 2, 2008 at 9:51 PM, mcdaniel <521 at ofig.org
> > > <mailto:521 at ofig.org>> wrote:
> > >
> > >     i understand, this was not a question- like, from a test- it's
> > >     simply me
> > >     wondering...  -i understand why it looks that way though...
> > >
> > >     b
> > >
> > >     Chris Fowler wrote:
> > >     > On Fri, 2008-05-02 at 21:38 -0400, mcdaniel wrote:
> > >     >
> > >     >> can anyone please answer my question?
> > >     >>
> > >     >
> > >     > Not good following a mailing list post asking for an answer to
> > the
> > >     > question.  You'll not get many answers that way.
> > >     >
> > >     > I did a quick google and found some answers
> > >     >
> > >     >
> > >
> > http://saloon.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=2
> > 7&t=002061
> > >
> > <http://saloon.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=
>
> > 27&t=002061>
> > >     >
> > >     > http://www.google.com/search?hl=en&q=Extend+Threads+vs
> > >     <http://www.google.com/search?hl=en&q=Extend+Threads+vs>
> > >     > +Runnable&btnG=Google+Search
> > >     >
> > >     >
> > >     >
> > >     >> barclay
> > >     >>
> > >     >>  >>>>
> > >     >>
> > >     >> 5/1/2008; barclay wrote:
> > >     >>
> > >     >>> why would one ever "extend Thread" vs. "implementing
> > >     Runnable"? -are
> > >     >>> there speed gains/losses?
> > >     >>>
> > >     >>>
> > >
> > ------------------------------------------------------------------------
> > >     >>>
> > >     >>> _______________________________________________
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> > >     >>>
> > >     >>>
> > >     >> _______________________________________________
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> > >     >> http://www.ajug.org/mailman/listinfo/ajug-members
> > >     >>
> > >     >
> > >     >
> > >     > _______________________________________________
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> > >     >
> > >     >
> > >     >
> > >
> > >     _______________________________________________
> > >     ajug-members mailing list
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> > >
> > >
> > >
> > >
> > > --
> > > Regards,
> > > ShivRaj Patil
> > > 4685, Apartment # K4
> > > Atlanta, GA-30338
> > > Cell: (908) - 720 0285
> > > ----------------------------------------------------------------------
> > > --
> > >
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