1 import java.util.regex.Matcher;
 2 import java.util.regex.Pattern;
 3
 4 public class Re {
 5     public static void main(String[] args) {
 6         String inputLine = "blah blah, uninteresting OU= 9623 stupid shit";
 7         String pattern = " OU= ([0-9]{4})";
 8
 9         Pattern p = Pattern.compile(pattern);
10         Matcher m = p.matcher(inputLine);
11
12         if (m.find()) {
13             String match = m.group(1);
14
15             System.out.println("Found match: " + match);
16         }
17     }
18 }