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NNTP-Posting-Date: Sat, 11 Jun 2011 13:04:59 -0500
Date: Sat, 11 Jun 2011 11:04:57 -0700
From: Patricia Shanahan <pats@acm.org>
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Subject: Re: Class.forName().newInstance() vs new
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On 6/11/2011 10:49 AM, Robert Klemme wrote:
> On 11.06.2011 19:13, Abu Yahya wrote:
...
>> else { // handle unrecognized
>> Class<?> k = Class.forName(dbMgrClassName);
>> db = (DB) k.newInstance();
>> }
...
> Doing if else cascades is certainly the worst thing - not so much
> because of the performance but because of the deficiency that you need
> to touch the code every time you want to add a new class. With the other
> two approaches you do not have to do that.
...

As coded, the forName code was left in as a fall-through handler, so it
new classes can be handled without touching the code. Of course, that
also means it has all the complications of both the if-else approach and
the forName approach.

Patricia