Java: Regular expression failing, any thoughts?

Hello Experts,

I am not sure how to set up group(3).... any ideas?

	public static void main(String[] args) {
		// log source
		String source = "12:22:22.826 error 009f01c1a3bdb079 \n"  +
				"12:22:22.926 message 007v01c1a3bdr089 \n" +
				"12:22:23.126 error 001f01p1a3bwrb079 \n" +
				"12:22:24.026 error 001f01p1a3bwrtr079 \n"  +
				"";		
		Pattern qPattern = Pattern.compile("(\\d{2}:\\d{2}:\\d{2}\\.\\d{3}\\s).*(error).*(\\s\\W+\\s)"); //this also works	
		Matcher qMatcher = qPattern.matcher(source);
		while (qMatcher.find()) {
			//test
			System.out.println("groups: " + qMatcher.groupCount());	
			System.out.println("error: " + qMatcher.group(3));
		}
	}// END OF MAIN

Open in new window


in advance, thank you for all (or any) help...

regards,
epifanio67Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

CEHJCommented:
\\W tells it to match a non-word character - you need the reverse.

Also, you need (if you're simulating log file lines) to use a Scanner on the String you have:

   public static void main(String[] args) {
        // log source
        String source = "12:22:22.826 error 009f01c1a3bdb079 \n" +
            "12:22:22.926 message 007v01c1a3bdr089 \n" +
            "12:22:23.126 error 001f01p1a3bwrb079 \n" +
            "12:22:24.026 error 001f01p1a3bwrtr079 \n" + "";

        Pattern qPattern = Pattern.compile(
                "(\\d{2}:\\d{2}:\\d{2}\\.\\d{3}\\s).*?(error).*?(\\s\\w+\\s)"); //this also works	
        Scanner s = new Scanner(source);

        while (s.hasNextLine()) {
            String line = s.nextLine();
            Matcher qMatcher = qPattern.matcher(line);

            while (qMatcher.find()) {
                //test
                System.out.println("groups: " + qMatcher.groupCount());
                System.out.println("error: " + qMatcher.group(3));
            }
        }

        s.close();
    } // END OF MAIN
 

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
epifanio67Author Commented:
thank you so much for your help...
0
CEHJCommented:
:)
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Java

From novice to tech pro — start learning today.