- Pattern Breakdown:
^(https?:\\/\\/)?: Matches the protocol (http:// or https://).(([a-zA-Z0-9\\-\\.]+)\\.([a-zA-Z]{2,})): Matches domain names.localhost: Matches localhost.((\\d{1,3}\\.){3}\\d{1,3}): Matches IPv4 addresses.(\\:\\d+)?: Matches the port number.(\\/[-a-zA-Z0-9%_@.&+=~]<em>)</em>$: Matches the path.
This regex pattern is basic and may not cover all edge cases. Creating a regex that matches all valid URLs while excluding invalid ones can be challenging.