We have a shell script which sets various environment variables. We are interested in one line in that file as follows:
Here the ':5340' may or may not be present.
We are trying out a pattern : Pattern.compile("^(GATEWAY=)(.*)(( ([0-9]+)?)(;.*)($)") Although this seems to work fine, we needed to confirm whether this is indeed the correct way to capture our used-case.
When we specify the grouping as '(( ([0-9]+)?)' does the '?' apply to just '([0-9]+)' or '( ([0-9]+)' as a group? [ June 02, 2008: Message edited by: Ranadhir Nag ]
I think the latter, but it is difficult to read your post. Please click the pencil-and-paper "edit" icon and tick "disable smilies" at the lower left to get rid of the extraneous
Joined: Oct 13, 2005
On a closer look, I think I was mistaken.
In ([0-9]+)? the ? applies to ([0-9]+).
Joined: Mar 09, 2006
How then we state that '( ([0-9]+)' may or may not be present as a group ; and yet refer to both '( ' and '([0-9]+)' separately as 'group' through matcher? An exammple output from the matcher would be as follows: group 2 - devsol1 group 3 - : group 4 - 5340 [ June 02, 2008: Message edited by: Ranadhir Nag ]