Groups > comp.lang.java.programmer > #25648

Re: JLS 3/e -- Lots Of Errors

From	Joshua Cranmer <Pidgeot18@verizon.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: JLS 3/e -- Lots Of Errors
Date	2011-02-05 00:15 -0500
Organization	A noiseless patient Spider
Message-ID	<iiimec$dh1$1@news.eternal-september.org> (permalink)
References	<iiflvc$keg$2@lust.ihug.co.nz> <iii9ku$58c$1@lust.ihug.co.nz>

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On 02/04/2011 08:37 PM, Lawrence D'Oliveiro wrote:
> Here’s another fun one.
>
> In section 4.8, on page 58, it says:
>
>      The use of raw types is allowed only as a concession to compatibility of
>      legacy code. The use of raw types in code written after the introduction
>      of genericity into the Java programming language is strongly
>      discouraged. It is possible that future versions of the Java programming
>      language will disallow the use of raw types.
>
> (That last sentence is in bold.) However, in the discussion on page 136:
>
>      Note that expression names may be qualified by type names, but not by
>      types in general.

I trimmed this down to the key sentence. The discussion notes that it's 
a type name *and not a type* that defines the expression name. Raw types 
are generic types that are not used in a generic manner, e.g., in class 
instance creation expressions. I suspect this may have been done, in 
part, to emphasize that Java's generics are not C++'s templates.

-- 
Beware of bugs in the above code; I have only proved it correct, not 
tried it. -- Donald E. Knuth

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Re: JLS 3/e -- Lots Of Errors Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-05 14:37 +1300
  Re: JLS 3/e -- Lots Of Errors Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-02-05 00:15 -0500
    Re: JLS 3/e -- Lots Of Errors Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-02-05 10:10 -0500
    Re: JLS 3/e -- Lots Of Errors Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-05 19:41 +1300
  Re: JLS 3/e -- Lots Of Errors Lew <noone@lewscanon.com> - 2011-02-04 23:59 -0500
    Re: JLS 3/e -- Lots Of Errors Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-05 19:42 +1300
      Re: JLS 3/e -- Lots Of Errors Lew <noone@lewscanon.com> - 2011-02-05 09:34 -0500
        Re: JLS 3/e -- Lots Of Errors "javax.swing.JSnarker" <gharriman@boojum.mit.edu> - 2011-02-05 12:52 -0500

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