Match
class. } RegularExpression re = new RegularExpression(regex, "i"); if (re.matches(text) >= 0) { ...}
You can specify options to RegularExpression(
regex,
options)
or setPattern(
regex,
options)
. This options parameter consists of the following characters.
"i"
"m"
"s"
"u"
"w"
","
"X"
match()
method does not do subsring matching but entire string matching. Differences from the Perl 5 regular expression
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Meta characters are `. * + ? { [ ( ) | \ ^ $'.
This range matches the character.
This range matches a character which has a code point that is >= C1's code point and <= C2's code point. + *
...
These expressions specifies the same ranges as the following expressions.
Enumerated ranges are merged (union operation). [a-ec-z] is equivalent to [a-z]
Match
instance after matches(String,Match)
. The 0th group means whole of this regular expression. The Nth gorup is the inside of the Nth left parenthesis. For instance, a regular expression is " *([^<:]*) +<([^>]*)> *" and target text is "From: TAMURA Kent <kent@trl.ibm.co.jp>":
Match.getCapturedText(0)
: " TAMURA Kent <kent@trl.ibm.co.jp>" Match.getCapturedText(1)
: "TAMURA Kent" Match.getCapturedText(2)
: "kent@trl.ibm.co.jp" regex ::= ('(?' options ')')? term ('|' term) term ::= factor+ factor ::= anchors | atom (('*' | '+' | '?' | minmax ) '?'? )? | '(?#' [^)]* ')' minmax ::= '{' ([0-9]+ | [0-9]+ ',' | ',' [0-9]+ | [0-9]+ ',' [0-9]+) '}' atom ::= char | '.' | char-class | '(' regex ')' | '(?:' regex ')' | '\' [0-9] | '\w' | '\W' | '\d' | '\D' | '\s' | '\S' | category-block | '\X' | '(?>' regex ')' | '(?' options ':' regex ')' | '(?' ('(' [0-9] ')' | '(' anchors ')' | looks) term ('|' term)? ')' options ::= [imsw]* ('-' [imsw]+)? anchors ::= '^' | '$' | '\A' | '\Z' | '\z' | '\b' | '\B' | '\<' | '\>' looks ::= '(?=' regex ')' | '(?!' regex ')' | '(?<=' regex ')' | '(?<!' regex ')' char ::= '\\' | '\' [efnrtv] | '\c' [@-_] | code-point | character-1 category-block ::= '\' [pP] category-symbol-1 | ('\p{' | '\P{') (category-symbol | block-name | other-properties) '}' category-symbol-1 ::= 'L' | 'M' | 'N' | 'Z' | 'C' | 'P' | 'S' category-symbol ::= category-symbol-1 | 'Lu' | 'Ll' | 'Lt' | 'Lm' | Lo' | 'Mn' | 'Me' | 'Mc' | 'Nd' | 'Nl' | 'No' | 'Zs' | 'Zl' | 'Zp' | 'Cc' | 'Cf' | 'Cn' | 'Co' | 'Cs' | 'Pd' | 'Ps' | 'Pe' | 'Pc' | 'Po' | 'Sm' | 'Sc' | 'Sk' | 'So' block-name ::= (See above) other-properties ::= 'ALL' | 'ASSIGNED' | 'UNASSIGNED' character-1 ::= (any character except meta-characters) char-class ::= '[' ranges ']' | '(?[' ranges ']' ([-+&] '[' ranges ']')? ')' ranges ::= '^'? (range ','?)+ range ::= '\d' | '\w' | '\s' | '\D' | '\W' | '\S' | category-block | range-char | range-char '-' range-char range-char ::= '\[' | '\]' | '\\' | '\' [,-efnrtv] | code-point | character-2 code-point ::= '\x' hex-char hex-char | '\x{' hex-char+ '}' | '\v' hex-char hex-char hex-char hex-char hex-char hex-char hex-char ::= [0-9a-fA-F] character-2 ::= (any character except \[]-,)
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