Question

I have a string that is always built likeMfr Part#: MBRB1045G Technologie ... or Mfr Part#: MBRB1545CTT4G Mounting, so there is always Mfr Part#: then the partnumber I want to extract and then this is followed by either Technologie or Mounting entailed by other characters.

How would you extract that partnumber MBRB1045G from this?

Answer 1

This should do the trick:

    final Pattern pattern = Pattern
            .compile("Mfr Part#: ([^ ]+) (Technologie|Mounting).*");
    final Matcher matcher = pattern
            .matcher("Mfr Part#: MBRB1045G Mounting");
    matcher.matches();
    System.out.println(matcher.group(1));

However, if it’s not important to you to check that the string has that specific pattern, you might also use the simpler expression: Mfr Part#: ([^ ]+) .*

Also note that you may store the pattern object and reuse it for subsequent usages. This will give you a better performance.