Path: csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!npeer02.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!nx02.iad01.newshosting.com!newshosting.com!news-out.readnews.com!transit3.readnews.com!news-out.news.tds.net!newsreading01.news.tds.net!53ab2750!not-for-mail From: "=?UTF-8?B?QXJuZSBWYWpow7hq?=" <=?utf-8?b?qxjuzsbwywpow7hq?=@1:261/38.remove-nlb-this> Subject: Re: hashCode Message-ID: <502943B3.56758.calajapr@time.synchro.net> X-Comment-To: Lew Newsgroups: comp.lang.java.programmer In-Reply-To: <5027F2CA.56697.calajapr@time.synchro.net> References: <5027F2CA.56697.calajapr@time.synchro.net> X-FTN-AREA: COMP.LANG.JAVA.PROGRAMMER X-FTN-MSGID: 1:261/38 2e251ef1 X-FTN-REPLY: 1:261/38 c813e673 Content-Type: text/plain; charset=IBM437 Content-Transfer-Encoding: 8bit X-Gateway: time.synchro.net [Synchronet 3.16a-Win32 NewsLink 1.98] Lines: 25 Date: Mon, 13 Aug 2012 18:36:17 GMT NNTP-Posting-Host: 69.21.70.65 X-Complaints-To: news@tds.net X-Trace: newsreading01.news.tds.net 1344882977 69.21.70.65 (Mon, 13 Aug 2012 13:36:17 CDT) NNTP-Posting-Date: Mon, 13 Aug 2012 13:36:17 CDT Organization: tds.net X-Received-Bytes: 1869 Xref: csiph.com comp.lang.java.programmer:17808 To: Lew From: =?UTF-8?B?QXJuZSBWYWpow7hq?= On 8/12/2012 12:46 AM, Lew wrote: > Arne Vajh-,j wrote: >> But with the same performance note. And a big sigh because it >> seems to want to broaden bad performance from a single class >> to the entire programming style (multiple classes). > > Overriding 'hashCode()' is done for functional reasons, not performance > reasons. If you fail to override the method, you'll get incorrect > behavior, for example failing to find a collection member that is > actually present. Correct. But the return constant is a special case. It functions as it should but performs very poorly. Arne --- BBBS/Li6 v4.10 Dada-1 * Origin: Prism bbs (1:261/38) --- Synchronet 3.16a-Win32 NewsLink 1.98 Time Warp of the Future BBS - telnet://time.synchro.net:24