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David Brownell wrote,
> Literals are already interned. It's in the language
> spec. Look at the javadoc for java.lang.String.intern ()
Good point ... and one which I'd <blush>unaccountably
overlooked</blush>.
I don't think this materially affects my argument tho',
because the only time where the performance difference
between,
foo == "literal"
and,
foo.equals("literal")
is going to be significant is where there are long chains
of comparisons, ie.,
if(foo == "elem1")
// do stuff for elem1
else if(foo == "elem2")
// do stuff for elem2
// ... repeat many times ...
else if (foo == "elemn")
// do stuff for elemn
where it'd be a far better idea (both from performance and
software design POVs) to do something like,
ElementHandler handler =
(ElementHandler)someTable.lookup(foo);
handler.doStuffForElement();
Cheers,
Miles
--
Miles Sabin Cromwell Media
Internet Systems Architect 5/6 Glenthorne Mews
+44 (0)20 8817 4030 London, W6 0LJ, England
msabin@c... http://www.cromwellmedia.com/
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