Given a string, , matching the regular expression [A-Za-z !,?._'@]+, split the string into tokens. We define a token to be one or more consecutive English alphabetic letters.

Splits a string str into fields using pattern as the separator, which may be either a string or a regular expression. If pattern is not specified, then the regular expression \s+ is used to split on ...

Think you've nailed the basics of Java pattern matching? Keep learning with these Java pattern matching examples involving records, inferred types and generics.