From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00, PP_MIME_FAKE_ASCII_TEXT autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII X-Google-Thread: 103376,1116ece181be1aea X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2003-09-15 17:38:54 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!cyclone.bc.net!newsfeed.telusplanet.net!newsfeed.telus.net!chi1.webusenet.com!news.webusenet.com!cyclone1.gnilink.net!spamkiller2.gnilink.net!nwrdny01.gnilink.net.POSTED!53ab2750!not-for-mail From: "Stephane Richard" Newsgroups: comp.lang.ada References: Subject: Re: Is the Writing on the Wall for Ada? X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Message-ID: Date: Tue, 16 Sep 2003 00:38:52 GMT NNTP-Posting-Host: 129.44.81.48 X-Complaints-To: abuse@verizon.net X-Trace: nwrdny01.gnilink.net 1063672732 129.44.81.48 (Mon, 15 Sep 2003 20:38:52 EDT) NNTP-Posting-Date: Mon, 15 Sep 2003 20:38:52 EDT Xref: archiver1.google.com comp.lang.ada:42553 Date: 2003-09-16T00:38:52+00:00 List-Id: Indeed, perhaps it will...like you said, I didn't see neither quotes from respectable sources in this article or Reasons why they were switching....But I do hope this guy reads these posts, Java Real time have yet to be real time especialy with it's garbage collection engine...which will ultimately interfere with realtime operations. as much as they want to say it, I've done simple delays and calculations in Java and and Ada regarding realtime performances. my own personal testing for afull fledged music studio software I'm working on, where realtime isn't mission critical but very important for realistic playback of a piece of music at a given tempo. and the deviation of time per note type and simulated delays for these lengths is quite stable in Ada as in 2 half notes are equal to 1 whole note, 2 64th of a note are equal to 1 32th of a note, etc etc....since this would simulate a non linear time based entity, eact deviation would be a cumulative error margin averaged for a whole song (3 minutes + total deviations)....Java didn't do so well I'm affraid, and I wasn't creating / deleting objects in the process either just simple delays for the allotted time frame per note type. I can just imagine what the results would be if I started playing with resoursces and that garbage collection during the same simulation..... If time is a real factor in what they are looking for, I'd do some serious benchmarking before proclaming that Java realtime is anywhere close to Ada's....:-)...my tests showed otherwise. -- St�phane Richard Senior Software and Technology Supervisor http://www.totalweb-inc.com For all your hosting and related needs "Warren W. Gay VE3WWG" wrote in message news:OPl9b.3508$BT1.119023@news20.bellglobal.com... > Stephane Richard wrote: > > Here's my perception. This is from the many messages that exist in this > > thread, since I'm responding to many comments that were made, I just decided > > to put it here in the hierarchy of messages pertaining to this thread. > > > > If the millitary switches to Java, it will shoot itself in the foot. > > Especially if they expect the same kind of: > > > > a. Performances (Java is slower than Ada, in many places I consider > > essential) > > b. Readability and Udnerstandability of Code > > c. Any kind of standard. A datatype is NOT an object and Java thinks it > > is. What to make of that? drop in performances automatically. > > > > Many Java projects I did in the first release of Java I basically gave up on > > when the JDK 2 came out....what qbout JDK3, 4 or 5 when they pop up? > > Well, even if we all agreed that is true, the very thing that > concerns me (if the article is accurate in this), is that they > have made it a goal to get away from Ada. It doesn't matter if > it makes sense or not. > > If someone sets out with a goal in mind, at some point, and in > some way, they're going to try to make it work. It seems that they > think that Real Time Java is going to help, if we are to believe > the writer. > > Then again, who knows if this is truly their goal? Perhaps it was > the writer's interpretation of things that he has observed. He > didn't exactly quote anyone on that, IIRC. > > Anyway, I hope the best for Ada. Maybe Ada200Y will give it a > significant boost in the right direction. > > -- > Warren W. Gay VE3WWG > http://home.cogeco.ca/~ve3wwg >