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Re: Java Overloading rules confusion

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On 10/9/2020 9:21 AM, Eric Sosman wrote:
> On 10/8/2020 10:47 PM, Wayne wrote:
>> I have a question on overloading in Java.  [...]
>>
>> Shouldn't "m(int,float)" be more specific than "m(double,int)"?
> 
>      Had to spend some time studying JLS 15.12.2.5 to find that the
> answer is "No."  There's a lot if niggly detail in the JLS, but for
> me the easiest explanation comes in the introductory section:
> 
>      "The informal intuition is that one method is more specific
>      than another if any invocation handled by the first method
>      could be passed on to the other one without a compile-time
>      error."
> 
> Let's try this out with your two versions of m().  Clearly, both
> versions could (in isolation) handle m(3,4) or m('3',4) and many
> other invocations.  However, m(3,4.0f) would work only with the
> (int,float) version, but only (double,int) could handle m(3.0,4).
> That is, for each version there is an invocation that it could
> accept but would not work with the other.  So (says "informal
> intuition") neither is "more specific" than the other, because
> each has valid invocations the other could not accept.
> 
>      Interesting query.  Thanks!
> 

I appreciate your reply, it does help.  Thanks!

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Java Overloading rules confusion Wayne <wayne@nospam.invalid> - 2020-10-08 22:47 -0400
  Re: Java Overloading rules confusion Marcel Mueller <news.5.maazl@spamgourmet.org> - 2020-10-09 09:01 +0200
  Re: Java Overloading rules confusion Eric Sosman <esosman@comcast-dot-net.invalid> - 2020-10-09 09:21 -0400
    Re: Java Overloading rules confusion Wayne <wayne@nospam.invalid> - 2020-10-09 22:51 -0400
  Re: Java Overloading rules confusion Arne Vajhøj <arne@vajhoej.dk> - 2020-10-09 09:59 -0400
    Re: Java Overloading rules confusion Wayne <wayne@nospam.invalid> - 2020-10-09 22:51 -0400

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