Clever Geek Handbook

StringBuilder analog for BigDecimal

I have a list of BigDecimals to summarize. If they were Strings for concatenation, I would use StringBuilder to reduce object creation. Is there something similar for BigDecimal? Or maybe I shouldn't worry about it? Is it worth the effort to optimize BigDecimal creation?

BigDecimal result = BigDecimal.ZERO;
for (CashReportElement element : getReportElementSet()) {
    if (element.getCurrencyCode().equals(currencyCode)) {
        result = result.add(element.getSum());
    }
}
return result;
+2


source to share


2 answers


There is no such analog in Java SE.



And to the question of whether it's worth the effort: you should only learn this if this code turns out to be a performance bottleneck.

+8


source


I'll quote Donald Knuth here:

"We have to forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil."



Don't worry until this is really a measurable (!) Problem. I'm not a BigDecimal performance expert, but the char [] copying that is done during String concatenation is a much more difficult task, which is for sure.

+7


source






More articles:


All Articles