Huh, I didn't know that. I've read through a fair amount of Java code with regexes and never seen anyone use comments. Maybe it's because Java doesn't have prop

Huh, I didn't know that. I've read through a fair amount of Java code with regexes and never seen anyone use comments. Maybe it's because Java doesn't have proper multi-line string support built into the language. If you don't have multi-line support in the language then you're more likely to put the comments outside the string: String regex= "^" +"(?:http)(?:s)?" // http or https +"(?:\:\/\/)" // :// +"(?:www\.)?" // optional www. +"(?:[^\ ]*)" // rest of URL (no spaces) +"$";