The purpose of using a constants pool for immutable constants
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patstuart
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Published on 2014-05-30T19:09:23Z
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2014/05/31
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Originally posted at stackoverflow.com/q/23961260
I come across the following code with a lot of frequency:
if (myArray.length == Constants.ZERO_INT)
or
if (myString != null && !myString.equals(Constants.EMPTY_STRING))
Neither of these makes much sense to me. Isn't the point of having a constant pool for ease of code appearance and to allow for modularity? In both of the above cases, it just looks like needless noise that accomplishes neither objective.
My question: what is the purpose of using a constants pool for variables like this which will never change? Or is this just cargo cult programming? If so, then why does it seem to be prevalent in the industry? (I've noticed it with at least two different employers I've worked with).
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