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Re: A small quiz

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On 10/1/2015 05:02, Stefan Ram wrote:
>    A method m() is declared to have a return type of java.lang.String:
>
> java.lang.String m()
>
>    . A programmer writes this expression:
>
> java.lang.String.valueOf( m() )
>
>    (The scope is so that »m« in the above expression refers to the
>    method »m()« as declared above.)
>
>    . Can you find out what might be a good reason the programmer might
>    have to write this expression? Since the return type of m() already
>    /is/ java.lang.String, the call to »java.lang.String.valueOf« seems
>    to be completely superfluous!
>

If m() returns null String.valueOf would return "null".

-- 

Knute Johnson

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Re: A small quiz Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-10-01 08:22 -0700
  Re: A small quiz Arne Vajhøj <arne@vajhoej.dk> - 2015-10-02 22:16 -0400

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