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=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,447bd1cf7a88c198 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-01-16 12:06:03 PST Path: supernews.google.com!sn-xit-03!supernews.com!cyclone-sjo1.usenetserver.com!news-out.usenetserver.com!news3.bellglobal.com!sunqbc.risq.qc.ca!newsfeed.mathworks.com!cyclone.swbell.net!bos-service1.ext.raytheon.com!bos-service2.ext.raytheon.com.POSTED!not-for-mail Message-ID: <3A64A94C.F265050A@ftw.rsc.raytheon.com> From: Wes Groleau X-Mailer: Mozilla 4.75 [en] (WinNT; U) X-Accept-Language: en,es,fr,pt MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Do we need "Mission-Critical" software? Was: What to Do? References: <3A4F5A4A.9ABA2C4F@chicagonet.net> <3A4F759E.A7D63F3F@netwood.net> <3A50ABDF.3A8F6C0D@acm.org> <92qdnn$jfg$1@news.huji.ac.il> <3A50C371.8B7B871@home.com> <3A51EC04.91353CE7@uol.com.br> <3A529C97.2CA4777F@home.com> <3A53CB9E.EA7CF86C@uol.com.br> <3A5466DE.811D43A5@acm.org> <932aol$ikc$1@nnrp1.deja.com> <932mi6$r2k$1@trog.dera.gov.uk> <9343b1$3g5$1@nnrp1.deja.com> <934iuf$eqv$1@nnrp1.deja.com> <937kc7$ssq$1@nnrp1.deja.com> <93c0e9$4u6$1@nnrp1.deja.com> <93e33l$tfu$1@nnrp1.deja.com> <93ekmo$a14$1@nnrp1.deja.com> <93f73f$mt1$1@nnrp1.deja.com> <93fnao$49u$1@nnrp1.deja.com> <93l6ut$pvf$1@nnrp1.deja.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Tue, 16 Jan 2001 15:04:28 -0500 NNTP-Posting-Host: 151.168.144.162 X-Complaints-To: news@ext.ray.com X-Trace: bos-service2.ext.raytheon.com 979675470 151.168.144.162 (Tue, 16 Jan 2001 15:04:30 EST) NNTP-Posting-Date: Tue, 16 Jan 2001 15:04:30 EST Organization: Raytheon Company Xref: supernews.google.com comp.lang.ada:4064 Date: 2001-01-16T15:04:28-05:00 List-Id: > Java wanted to have better namespace control, so Java has packages. > These are better than C++ namespaces and more like Ada packages. But > the encapsulation construct in Java is still the "class", and in at > least two important senses (there are several) of the value > of "separation of interface and implementation", Java classes fall > short, The fact that in Java, "package" is so closely coupled to "subdirectory" shows that the Java designers had little understanding of the _difference_ between interface and implementation, so how could they see any reason to _separate_ them? More evidence is in the fact that every primitive type declaration basically describes an implementation where most type definitions in Ada (at least in well-written Ada) emphasize the abstractions more than the implementations. -- Wes Groleau http://freepages.rootsweb.com/~wgroleau