What are good regular expressions?

Question

I have worked for 5 years mainly in java desktop applications accessing Oracle databases and I have never used regular expressions. Now I enter Stack Overflow and I see a lot of

Answer 1

If you're just starting out with regular expressions, I heartily recommend a tool like The Regex Coach:

http://www.weitz.de/regex-coach/

also heard good things about RegexBuddy:

http://www.regexbuddy.com/