For example, if we need to match a two-digit number with the restriction that both digits must be the same, then we need to capture the first digit and then use a back reference for the first captured ...

Complete your introduction to the Regex API, then find out how regular expressions make quicker work of common tasks like code documentation and lexical analysis.

This program is a custom implementation of a regular expression (regex) matcher in Java. It demonstrates basic pattern matching functionalities, including special character handling, quantifiers, and ...

Java has much to recommend it as a development language, but one thing it always has lacked is native regex support. Until recently, using regular expressions in Java has meant using third-party class ...