Introduction to a library which support faster regular expression processing: http://weblogs.java.net/blog/tomwhite/archive/2006/03/a_faster_java_r.html http://www.javaadvent.com/2015/12/java-regular-expression-library-benchmarks-2015.html

Regex helper - https://github.com/VerbalExpressions/JavaVerbalExpressions

java-regular-expressions-cheat-sheet - https://zeroturnaround.com/rebellabs/java-regular-expressions-cheat-sheet