14-01 Java matches class, pattern class, matcher class

Pattern class

Common rules for regular expressions

Common functions of regular expressions

A: Public Boolean matches (string regex) of the string class of the judgment function

B: Public string [] split (string regex) of the split function string class

Split and sort strings

C: Public string replaceall (string regex, string replacement) of the replacement function string class

D: Get function pattern and matcher pattern P = pattern compile("a*b"); Matcher m = p.matcher("aaaaab"); Find (): find the existence of the save group (): get the data just found