Regular Expressions in Java

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Phreida
xmlser

Unicode Support

• Since Unicode recognizes three cases: Upper, Title, and Lower, it is important that the ignore case flag allow you to match on any of them.
• Case of letters is controlled by a CaseMgr class. This class was designed to be simple so that you can replace it and obtain the properties you desire.
• Special pattern matching. Did you ever want to match on a "letter" but did not want to be restricted to "[a-zA-Z]"? Package pat supports some special patterns that allow you to do this and similar things.

  Pattern	Meaning
  (??p)	Match a Unicode punctuation character.
  (??uc)	Match an upper case Unicode character.
  (??lc)	Match a lower case Unicode character.
  (??P)	Match a character that is not a Unicode punctuation character.
  (??s)	Match a Unicode white space character.
  (??S)	Match a character that is not a Unicode white space character.
  (??w)	Match a Unicode alphabetic, decimal digit, or the '_' character.
  (??W)	Match a character that is neither an alphabetic, a decimal digit, nor the '_' character.
  (??d)	Match a Unicode decimal digit character
  (??D)	Match a character that is not a Unicode decimal digit character.
  (??m)	Match a Unicode math character
  (??M)	Match a character that is not a Unicode Math character.
  (??c)	Match a Unicode currency symbol character
  (??C)	Match a character that is not a Unicode currency symbol.
  (??a)	Match an alphabetic Unicode character.
  (??A)	Match a non-alphabetic Unicode character.

• For more information on Unicode, see http://www.unicode.org.