Solved

java reg expression string search

Posted on 2007-11-17
11
801 Views
Last Modified: 2008-02-01
This is most likely a simple question, but I don't have much experience with regexp's.  

I have a log file which my java program just read in as a string and I'd like to find all occurences of where it says "Error 00-E1122"  where 00-E1122 would obviously change.  So what I need is to get all of the error code values (but just the error value, not including the word Error), ideally have it in a vector of strings.
0
Comment
Question by:cfans
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
  • 3
11 Comments
 
LVL 63

Expert Comment

by:Zvonko
ID: 20304927
Only the numbers?
Can we see some longer text and show you how to get all the rest too?
Also state the message code format. Is the error code format always: 99-E9999


0
 

Author Comment

by:cfans
ID: 20304960
I apologize, this may help... the error code format is always found as: {Error 123ABC} format.  
So you can always be certian that it will be {Error someNumLetterDashSequence} and it will be in the brackets.  All I need is the Number/Letter/Dash sequence.
0
 
LVL 63

Expert Comment

by:Zvonko
ID: 20305015
Some examples for the COMPLETE string of the message would be good and the statements what parts you expect where.

0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 63

Expert Comment

by:Zvonko
ID: 20305022
Or can we say: all characters following the word "Error" and one or more blanks is the error number. The error number ends when all alpha, digit and dash chars are eaten or char not from the set of error number chars is found, right?

 
0
 

Author Comment

by:cfans
ID: 20305033
Zvonoko, you can say all characters following  "{Error" with 1 or more blank spaces and the error sequence (which is alpha, digit and dash) then ending in "}"
0
 
LVL 63

Expert Comment

by:Zvonko
ID: 20305082
And why do you not post an example sting?
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 20305097

>>I have a log file which my java program just read in as a string

Sound somewhat inefficient. You should read line by line. What happens when it gets large?

String error = line.replaceAll("\\{Error ([^}]+)", "$1");

Open in new window

0
 
LVL 86

Accepted Solution

by:
CEHJ earned 150 total points
ID: 20305130
Sorry - i must be tiring ;-)


Pattern p = Pattern.compile("\\{Error ([^}]+)");
Matcher m = p.matcher(line);
if (m.find()) System.out.println(m.group(1));

Open in new window

0
 

Author Comment

by:cfans
ID: 20305190
CEHJ.. what if there are more than one within a single line?
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 20305216
Replace if by while
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 20305312
:-)
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
jmeter usage 4 33
import as existing maven project 3 34
REGEXEXTRACT in google sheets 2 14
How to fix  socket closed error 11 25
Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. Java Flight Recorder is a profiling and event collectio…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.

740 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question