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From: Cecil Westerhof <Cecil@decebal.nl>
Newsgroups: comp.lang.java.programmer
Subject: How to handle same sanity checks
Date: Thu, 22 Jun 2017 11:10:38 +0200
Organization: Decebal Computing
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In my code I have several methods that start with:
    if ((n < MIN_VAL) || (n > MAX_VAL)) {
        throw new InvalidParameterException(String.format(ERROR_N, n));
    }

That is not really DRY.

I could write a method like:
    private void checkN(n) {
        if ((n < MIN_VAL) || (n > MAX_VAL)) {
            throw new InvalidParameterException(String.format(ERROR_N, n));
        }
    }

And then replace all the checks with a call to checkN. But then the
exception is generated in the method checkN instead of the method that
has a wrong parameter.
What is the best way to handle this?

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof