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Groups > comp.lang.java.programmer > #34859
| From | Eric Sosman <esosman@comcast-dot-net.invalid> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Scanner error |
| Date | 2016-07-11 15:26 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <nm0rsq$8am$2@dont-email.me> (permalink) |
| References | <87b76adc-9800-410f-ac5a-3cd25588bb3a@googlegroups.com> <charAt-20160711202259@ram.dialup.fu-berlin.de> |
On 7/11/2016 3:23 PM, Stefan Ram wrote:
> kalisha malama <malamakalisha@gmail.com> writes:
>> How old are you ?21
>> Do you have a Coupon?(Y/N)Exception in thread "main" java.lang.NullPointerException
>> at Apples.main(Apples.java:15)
>
> The method declaration
>
> void f( final java.lang.CharSequence s ){ s.charAt( 0 ); }
>
> assumes that »s« is not null, otherwise there will be an exception,
> which is a kind of runtime error.
>
> The code could be replaced by, for example,
>
> void f( final java.lang.CharSequence s ){ if( s != null )s.charAt( 0 ); }
>
> .
I, too, sometimes type faster than I think. Will you post a
correction?
--
esosman@comcast-dot-net.invalid
"Don't be afraid of work. Make work afraid of you." -- TLM
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Scanner error kalisha malama <malamakalisha@gmail.com> - 2016-07-11 12:00 -0700
Re: Scanner error Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-11 15:22 -0400
Re: Scanner error Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-11 15:26 -0400
Re: Scanner error Lew <lewbloch@gmail.com> - 2016-07-11 13:12 -0700
Re: Scanner error Eric Douglas <e.d.programmer@gmail.com> - 2016-07-11 13:58 -0700
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