Simon P. Chappell
writes "Regular expressions (regex to their friends) are an incredibly powerful addition to most programmer's personal toolkit of techniques. Programming using a language that doesn't support them can be frustrating if you need to do any amount of non-trivial string handling. Java was just such a language until the release of the 1.4.x series. Sure, there were libraries like ORO that would provide regex support, but it wasn't built in and not many companies allow the use of 3rd party libraries. With version 1.4.x, the corporate Java developer in the trench, received the power of regular expression pattern matching."
Read the rest of Simon's review.