Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!eternal-september.org!feeder.eternal-september.org!mx04.eternal-september.org!.POSTED!not-for-mail From: markspace <-@.> Newsgroups: comp.lang.java.programmer Subject: Re: multiple inheritance Date: Wed, 01 Aug 2012 20:07:58 -0700 Organization: A noiseless patient Spider Lines: 15 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Thu, 2 Aug 2012 03:08:01 +0000 (UTC) Injection-Info: mx04.eternal-september.org; posting-host="104ea93b2a90d763b2b4538d1ef3ad00"; logging-data="8608"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/LodH5/pRBo/kbp832kO6lmM3tls/RCNM=" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20120713 Thunderbird/14.0 In-Reply-To: Cancel-Lock: sha1:g8izicJ01Uv+HUSgmMUMIPEflyk= Xref: csiph.com comp.lang.java.programmer:16945 On 8/1/2012 7:28 PM, bob smith wrote: > Why doesn't Java support multiple inheritance? > The diamond problem. I'm not really up on the details however. I can tell you from hanging out on the lambda-dev list (Java 8 features) that Brian Goetz has pushed back strongly on any sort of multiple inheritance. Apparently the diamond problem is a real bear and introduces real complexity into both the compiler and the user code that can cause big problems in the long run. http://en.wikipedia.org/wiki/Diamond_problem