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Categories / Java / Regular Expressions

 

Characters classes specifies a list of possible characters

Character Class Meta-Character            Matches .                                         Any single character \d                                        A digit [0-9] \D                                        A nondigit [^0-9] \s                                        A whitespace character [ \t\n\x0B\f\r] \S                                        A nonwhitespace character[^\s] \w                                        A word character  [a-zA-Z_0-9] \W                                        A nonword character [^\w]