Path: csiph.com!x330-a1.tempe.blueboxinc.net!feeder1.hal-mli.net!nx02.iad01.newshosting.com!newshosting.com!news-out.readnews.com!transit3.readnews.com!news-out.news.tds.net!newsreading01.news.tds.net!86597e80!not-for-mail From: "Lew" Subject: Re: java doubts Message-ID: X-Comment-To: comp.lang.java.databases Newsgroups: comp.lang.java.databases In-Reply-To: <4873d90a$0$90266$14726298@news.sunsite.dk> References: <4873d90a$0$90266$14726298@news.sunsite.dk> Content-Type: text/plain; charset=IBM437 Content-Transfer-Encoding: 8bit X-Gateway: time.synchro.net [Synchronet 3.15a-Win32 NewsLink 1.92] Lines: 23 Date: Wed, 27 Apr 2011 15:22:22 GMT NNTP-Posting-Host: 96.60.20.240 X-Complaints-To: news@tds.net X-Trace: newsreading01.news.tds.net 1303917742 96.60.20.240 (Wed, 27 Apr 2011 10:22:22 CDT) NNTP-Posting-Date: Wed, 27 Apr 2011 10:22:22 CDT Organization: TDS.net Xref: x330-a1.tempe.blueboxinc.net comp.lang.java.databases:206 To: comp.lang.java.databases amarmca2u@gmail.com wrote: >> what is the difference between the "A class by defaultly >> synchronized(Vector)" and "A class which is manuvally synchronized"? Arne Vajh|+j wrote: > The first is thread safe for single calls out of the box (but not for > many real world situations). For the latter you need to do something > typical Collections synchronizedXxxx for single call or more practical > synchronized on something to make more than one call safe just like you > have to for the first. There are, of course, other differences between Vector and another List implementation like ArrayList (its closest true-collections cousin) besides that one has its methods synchronized for you and other does not. -- Lew --- * Synchronet * The Whitehouse BBS --- whitehouse.hulds.com --- check it out free usenet! --- Synchronet 3.15a-Win32 NewsLink 1.92 Time Warp of the Future BBS - telnet://time.synchro.net:24