Simple REGEx Group Question...

Question

Hi,
Can someone please explain something with RegEx's to me concerning groups?
In the following code:
Pattern p = Pattern.compile("([A-Z][a-z]+) ([a-z]+) .*");
Matcher m = p.matcher("Aus bus L. 1771");
if (m.matches()) {
     System.out.println("Groups:");
     for (int i=0; i<m.groupCount(); i++) {
          System.out.println("  " + i + ": " + m.group(i));
}I expected group 1 to be "Aus" and there to be a group 2 of "bus".
If I change the RegEx to
Pattern p = Pattern.compile("([A-Z][a-z]+) (([a-z]+)) .*");Then I do get groups 0, 1 and 2.
Why does it need the extra "(" and ")" at the last group.
Thanks for any help!

Answer 1

Oooops:
for (int i=0; i<=m.groupCount(); i++) {Be the fix.... <= and not <