Finally I dont understand how to compound regular expressions, help please

I have read a lot of information about it, but .... I still do not understand how to make compound expresions ....
How must I use [ ] ?
Please three examples :
I want to search :
- any character but nothing of "abcd"
- any character but no 'dot' at any position
- any character but no 'dot' at position 4
Any good tutorial ?
Thank you

The way you have used the word 'search' create some uncertainty in my mind as to what you are asking for. I suspect that what you really want is a 'true' or 'false' that a given string matches some pattern. There are other ways to do this but ...
"any character but nothing of "abcd" " then use Matcher.matches() using regex "[^abcd]*" .
"any character but no 'dot' at any position" then Matcher.matches() using regex "[^.]*" .
"any character but no 'dot' at position 4" then Matcher.matches() using regex "(?!.{3}\\.)" .
Edited by: sabre150 on Aug 5, 2010 8:50 AM
Sodding forum markup!

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Regular Expression Help Please?

Hi
I'm trying to get my head round regular expressions in find
and replace,
it's a slow process for me!
I have this -
<a
href="
http://www.forms.mydomainname.com/cgi-bin/urltracker/tracker.pl?site=http://www.website-ad dress.com"
and I'm trying to change it to this -
<a
href="
http://www.forms.mydomainname.com/cgi-bin/urltracker/tracker.pl?site=http://www.website-ad dress.com&email="
I was trying first of all with a *.*, but couldn't work out
how to tell it
where the code ends?
They are hundred of pages like this, all with different
website-addresses.
After I have changed all the pages to the new code, I then
will need to copy
and paste an different email address to the end of each line,
to each page.
Unless anyone knows a way of automating that?
Hope someone can point me in the right direction?
Many thanks, Craig.

Hi David
Many thanks for all that and the detailed descriptions.
I will be working through it all again tomorrow, so will put
your info to
the test! lol
As for partially building the email addresses, I think that
would be too
much,
as the emails are all over the place, some have their own
domain, other use
hotmail, Yahoo etc.
Some even have they own domain for their website and a free
one for the
email address.
They are all Hotels, B&B' & Cottages etc.
Hopefully all your hard work will help me a step closer to
understanding it
all.
Many thanks again,
Craig.
"David Stiller" <[email protected]> wrote in
message
news:[email protected]...
> Craig,
>
>> You do have that correct David, thanks.
>
> Okay.
Regex is as much an "exact science" as it is an "art
> form" -- which isn't to say I'm a regex artist; I just
love the
> technology -- but I mention this because I made the
following assumption
> in order to keep the pattern relatively simple: your
href values are all
> quoted in either single or double quotes. Such as, for
example, the
> following sample HTML ...
>
> <body>
> <a
> href="
http://www.forms.mydomainname.com/cgi-bin/urltracker/tracker.pl?site=www.sample.com">asfd< /a>
> <a
> href='
http://www.forms.mydomainname.com/cgi-bin/urltracker/tracker.pl?site=www.example.net'></a>
> <a
> href="
http://www.forms.mydomainname.com/cgi-bin/urltracker/tracker.pl?site=www.company.com"></a>
> </body>
>
> In the Find field, enter this pattern ...
>
> (tracker\.pl\?site=.*?)(["'])
>
> ... and in the Replace field, enter this pattern ...
>
> $1&email=ADDRESS$2
>
> Then carefully use your Find Next and Replace buttons to
step through
> your code. The above will add &email=ADDRESS to your
HTML in all the
> right places. I chose that because ADDRESS is easy to
select by double
> clicking, which should facilitate your replacing it.
>
>
> Let's step through the patterns.
>
> (tracker\.pl\?site=[^"']*?)(["'])
>
> This looks for the phrase "tracker.pl?site=" (without
quotes) followed
> immediately by a "non-greedy" match of any character
that isn't a single
> or double quotation mark, followed immediately by either
a single or
> double quotation mark. I took , which I took to be a
safe, short "hook"
> into the string we need. I split this pattern into two
sections, grouped
> by parentheses. This allows us to refer to the first
part of the match
> (everything but the closing quotation mark) as group 1,
and the second
> part (the closing quotatin mark) as group 2. This is
like storying values
> with your calculator's M (memory) button.
>
> $1&email=ADDRESS$2
>
> Here, we refer to group 1 and follow it with the phrase
> "&email=ADDRESS" (without quotes), followed again by
group 2.
>
> Now, in theory, we could use the domain name of each
unique site to at
> least partially build the email address. That would get
you even closer
> to your goal. To do so, I'd need even more detail from
you, such as the
> kinds of domains you have (how many sub domains are
probable, etc.).
>
>
> David
> stiller (at) quip (dot) net
> Dev essays:
http://www.quip.net/blog/
> "Luck is the residue of good design."
>

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I haven't used regular expressions before, and I'm having trouble finding a regular expression to extract a string subset between two markers.
The string;
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Header stuff I don't want
Header stuff I don't want
Header stuff I don't want
Header stuff I don't want
Header stuff I don't want
ERRORS 6
Info I want line 1
Info I want line 2
Info I want line 3
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Go to Solution.

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{color:#000000}Hi....
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Finally I dont understand how to compound regular expressions, help please

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