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Groups > comp.lang.java.programmer > #25910

Re: JLS 3/e -- Lots Of Errors

Date 2011-02-06 22:03 -0500
From Arne Vajhøj <arne@vajhoej.dk>
Newsgroups comp.lang.java.programmer
Subject Re: JLS 3/e -- Lots Of Errors
References (3 earlier) <iil265$ob4$2@lust.ihug.co.nz> <iil5i6$10m$2@news.eternal-september.org> <iini4a$75r$3@lust.ihug.co.nz> <4d4f5275$0$23761$14726298@news.sunsite.dk> <iinmii$9er$4@lust.ihug.co.nz>
Message-ID <4d4f60f7$0$23756$14726298@news.sunsite.dk> (permalink)
Organization SunSITE.dk - Supporting Open source

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On 06-02-2011 21:48, Lawrence D'Oliveiro wrote:
> In message<4d4f5275$0$23761$14726298@news.sunsite.dk>, Arne Vajhøj wrote:
>
>> On 06-02-2011 20:32, Lawrence D'Oliveiro wrote:
>>
>>> In message<iil5i6$10m$2@news.eternal-september.org>, Joshua Cranmer
>>> wrote:
>>>
>>>> On 02/05/2011 09:48 PM, Lawrence D'Oliveiro wrote:
>>>>
>>>>> In message<iijnm4$d5j$1@news.albasani.net>, Lew wrote:
>>>>>
>>>>>> On 02/05/2011 07:32 AM, Lawrence D'Oliveiro wrote:
>>>>>>
>>>>>>> * Section 5.1.8, page 88: no mention of what happens when you unbox a
>>>>>>> NaN (the previous page said only that the boxed object had isNaN()
>>>>>>> evaluating to true, no mention of what floatValue() or doubleValue()
>>>>>>> might return).
>>>>>>
>>>>>> Nor is such a mention required, therefore its omission is not an
>>>>>> error. However, it's pretty clear that if 'isNan()' is true, then
>>>>>> 'doubleValue()' must return 'Double.NaN'.
>>>>>
>>>>> No it is not. The spec carefully refrains from mentioning what
>>>>> floatValue() and doubleValue() return.
>>>>
>>>> Why should it mention it? That is what the documentation on the
>>>> respective classes in the Java Standard API is for.
>>>
>>> If that’s the case, there should be a reference to where it’s properly
>>> defined.
>>
>> Why?
>>
>> People that read the JLS should have read the Java API (and
>> a tutorial on Java).
>
> Which one first?

I would suggest somewhat in parallel.

The Java API is best learned along the way.

Arne

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Thread

Re: JLS 3/e -- Lots Of Errors Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 21:01 -0500
  Re: JLS 3/e -- Lots Of Errors Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 19:11 +1300
  Re: JLS 3/e -- Lots Of Errors Arne Vajhøj <arne@vajhoej.dk> - 2011-02-07 20:10 -0500
  Re: JLS 3/e -- Lots Of Errors Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-02-07 15:48 +1300
    Re: JLS 3/e -- Lots Of Errors Arne Vajhøj <arne@vajhoej.dk> - 2011-02-06 22:03 -0500
  Re: JLS 3/e -- Lots Of Errors Ken Wesson <kwesson@gmail.com> - 2011-02-07 04:27 +0100

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