Table of contents

java.util.Pattern

syntax

capturing groups / non-capturing groups

(?<name>X)    X, as a named-capturing group
(?:X)         X, as a non-capturing group

lookahead / lookbehind

(?=X) 	      X, via zero-width positive lookahead
(?!X) 	      X, via zero-width negative lookahead
(?<=X) 	      X, via zero-width positive lookbehind
(?<!X) 	      X, via zero-width negative lookbehind
(?>X) 	      X, as an independent, non-capturing group

documentation

https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/regex/Pattern.html