On 9/19/05, [EMAIL PROTECTED] (Peter Gutmann) wrote:
>Found on the Daily WTF, http://www.thedailywtf.com/forums/43223/ShowPost.aspx:
>
> try {
> int idx = 0;
>
> while (true) {
> displayProductInfo(prodnums[idx]);
> idx++;
> }
> }
> catch (IndexOutOfBoundException ex) {
> // nil
> }
This is obviously just an attempt to make Java array access more like Java file
access. :-)
Seriously, the real flaw in this approach, which I did not see mentioned in the
comments on the web page Peter references above, is the masking of
IndexOutOfBoundExceptions that may be generated by displayProductInfo. This
code will treat such errors as "end of array". A more normal coding of the
loop:
for (int i=1; i<prodnums.length; i++) {
displayProductInfo(prodnums[idx]);
idx++;
}
would let the exception pass up the call chain, and with good error handling,
the problem would come to the attention of those responsible for fixing the
program.
If ArrayIndexOutOfBoundException were used instead of IndexOutOfBoundException,
errors in string indexing would pass up the call chain, while catching array
problems.
Cheers - Bill
---------------------------------------------------------------------
Bill Frantz | The first thing you need | Periwinkle
(408)356-8506 | when using a perimeter | 16345 Englewood Ave
www.pwpconsult.com | defense is a perimeter. | Los Gatos, CA 95032
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