Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.java.help > #901

Re: Help needed.

From markspace <-@.>
Newsgroups comp.lang.java.help
Subject Re: Help needed.
Date 2011-07-26 17:13 -0700
Organization A noiseless patient Spider
Message-ID <j0nl7o$tpu$1@dont-email.me> (permalink)
References <37f0537b-a064-4b12-9b6f-c104df52f4ba@k15g2000yqd.googlegroups.com>

Show all headers | View raw


On 7/26/2011 3:47 PM, neil furnival wrote:
> Exception in thread "main" java.lang.NullPointerException

> reply = myScanner.findInLine(".").charAt(0);


You should learn how to debug your own programs, it's an important part 
of programming.

My guess is in the line above the pattern "." was not found and 
findInlIne() returned null:

"If no such pattern is detected in the input up to the next line 
separator, then null is returned"

<http://download.oracle.com/javase/6/docs/api/java/util/Scanner.html#findInLine%28java.util.regex.Pattern%29>

I'll let you discover how to verify that this is indeed the problem, and 
what to do about it.

Back to comp.lang.java.help | Previous | NextPrevious in thread | Next in thread | Find similar


Thread

Help needed. neil furnival <neil.furnival@googlemail.com> - 2011-07-26 15:47 -0700
  Re: Help needed. markspace <-@.> - 2011-07-26 17:13 -0700
    Re: Help needed. neil furnival <neil.furnival@googlemail.com> - 2011-07-27 01:49 -0700
      Re: Help needed. lewbloch <lewbloch@gmail.com> - 2011-07-28 08:50 -0700
        Re: Help needed. lewbloch <lewbloch@gmail.com> - 2011-07-30 16:19 -0700
    Re: Help needed. Gene Wirchenko <genew@ocis.net> - 2011-07-27 11:33 -0700
  Re: Help needed. Roedy Green <see_website@mindprod.com.invalid> - 2011-07-26 22:09 -0700

csiph-web