The API consists of three classes–Pattern, Matcher, and PatternSyntaxException–all located in the java.util.regex package: Pattern objects, also known as patterns , are compiled regexes.

Explore the Regex API. Pattern, Matcher, and PatternSyntaxException are the three classes that comprise the Regex API. Each class offers methods that you can use to integrate regexes into your code.

We can then match values against these patterns; if a match is found, Java automatically extracts and assigns values as needed. Pattern matching examples. Pattern matching, introduced to Java 14, via ...

The java.util.regex package is breathtaking in the thoroughness of its implementation and, as always, is meticulously documented. Even more obscure regex arcana ... tutorial on regular-expression ...