Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.java.programmer > #6371
| Path | csiph.com!x330-a1.tempe.blueboxinc.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!nx02.iad01.newshosting.com!newshosting.com!69.16.185.21.MISMATCH!npeer03.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!postnews.google.com!f17g2000prf.googlegroups.com!not-for-mail |
|---|---|
| From | lewbloch <lewbloch@gmail.com> |
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Generics for a multiplevalue hashmap |
| Date | Thu, 21 Jul 2011 15:30:40 -0700 (PDT) |
| Organization | http://groups.google.com |
| Lines | 22 |
| Message-ID | <71884899-d3c1-40e3-87a3-e184c34352b3@f17g2000prf.googlegroups.com> (permalink) |
| References | <295b693a-1ba9-454f-965b-d33fc4d43731@glegroupsg2000goo.googlegroups.com> <4e2896da$0$309$14726298@news.sunsite.dk> |
| NNTP-Posting-Host | 172.19.12.96 |
| Mime-Version | 1.0 |
| Content-Type | text/plain; charset=ISO-8859-1 |
| Content-Transfer-Encoding | quoted-printable |
| X-Trace | posting.google.com 1311287555 3180 127.0.0.1 (21 Jul 2011 22:32:35 GMT) |
| X-Complaints-To | groups-abuse@google.com |
| NNTP-Posting-Date | Thu, 21 Jul 2011 22:32:35 +0000 (UTC) |
| Complaints-To | groups-abuse@google.com |
| Injection-Info | f17g2000prf.googlegroups.com; posting-host=172.19.12.96; posting-account=CP-lKQoAAAAGtB5diOuGlDQk0jIwmH0T |
| User-Agent | G2/1.0 |
| X-Google-Web-Client | true |
| X-Google-Header-Order | ASELCHRU |
| X-HTTP-UserAgent | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.56 Safari/535.1,gzip(gfe) |
| Xref | x330-a1.tempe.blueboxinc.net comp.lang.java.programmer:6371 |
Show key headers only | View raw
Arne Vajhøj wrote:
> Richard wrote:
>> I have done this
>
>> public class MultipleValueHashMap<T, U> implements Map<T, java.util.List<U>> {
>
>> I want to implement Map rather than extend HashMap as per Josh Bloch's Effective Java item 16.http://java.sun.com/docs/books/effective/toc.html
>
>> So I do not want to do this.
>> public class MM2<T,U> extends HashMap<T, List<U>> {
>> }
>
> Note the word "favor".
>
> You should evaluate not just choose without thinking.
At the very least, consider extending java.util.AbstractMap<K,V>.
--
Lew
Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Find similar
Re: Generics for a multiplevalue hashmap Richard <iamrichardjones@gmail.com> - 2011-07-19 13:32 -0700
Re: Generics for a multiplevalue hashmap Arne Vajhøj <arne@vajhoej.dk> - 2011-07-21 17:15 -0400
Re: Generics for a multiplevalue hashmap lewbloch <lewbloch@gmail.com> - 2011-07-21 15:30 -0700
csiph-web