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| From | Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> |
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Every expression has a type? |
| Date | Tue, 31 Oct 2017 12:00:28 +0200 |
| Organization | A noiseless patient Spider |
| Lines | 24 |
| Message-ID | <m3d1537i2r.fsf@sonera.fi> (permalink) |
| References | <Every-20171030130857@ram.dialup.fu-berlin.de> <m3po94xrte.fsf@sonera.fi> <null-20171030231708@ram.dialup.fu-berlin.de> |
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ram@zedat.fu-berlin.de (Stefan Ram) writes:
> Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> writes:
>>How about null?
>>Is it cosidered to have a type, since null can be any type at all?
> I have written this exercise.
> Try to predict the output of the following program.
> public final class Main
> {
> private static void f( final java.lang.Object o )
> { java.lang.System.out.println( "Bject" ); }
>
> private static void f( final java.lang.String s )
> { java.lang.System.out.println( "Tring" ); }
>
> public static void main( final java.lang.String[] args )
> { f( null ); }}
Actually I'm surprised of the output of that.
Just the opposite of what I thought.
--
Jukka Lahtinen
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Re: Every expression has a type? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2017-10-30 23:13 +0200
Re: Every expression has a type? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-10-30 18:07 -0400
Re: Every expression has a type? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2017-10-31 12:00 +0200
Re: Every expression has a type? Robert Klemme <shortcutter@googlemail.com> - 2017-10-31 14:40 +0100
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