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.

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 ...

In Java, I was surprised by how close the performance was for standard regular expressions to using string primitives. String primitives took 188 ms to process the 100,000 lines. Standard regular ...