jregex
Interface REFlags

All Known Implementing Classes:

Pattern

public interface REFlags

Field Summary

static int	DEFAULT All the foolowing options turned off
static int	DOTALL Affects the behaviour of dot(".") tag.
static int	IGNORE_CASE Pattern "a" matches both "a" and "A".
static int	IGNORE_SPACES Affects how the space characters are interpeted in the expression.
static int	MULTILINE Affects the behaviour of "^" and "$" tags.
static int	UNICODE Affects whether the predefined classes("\d","\s","\w",etc) in the expression are interpreted as belonging to Unicode.
static int	XML_SCHEMA Turns on the compatibility with XML Schema regular expressions.

Field Detail

DEFAULT

public static final int DEFAULT

All the foolowing options turned off

IGNORE_CASE

public static final int IGNORE_CASE

Pattern "a" matches both "a" and "A". Corresponds to "i" in Perl notation.

MULTILINE

public static final int MULTILINE

Affects the behaviour of "^" and "$" tags. When switched off:

the "^" matches the beginning of the whole text;

the "$" matches the end of the whole text, or just before the '\n' or "\r\n" at the end of text. When switched on:

the "^" additionally matches the line beginnings (that is just after the '\n');

the "$" additionally matches the line ends (that is just before "\r\n" or '\n'); Corresponds to "m" in Perl notation.

DOTALL

public static final int DOTALL

Affects the behaviour of dot(".") tag. When switched off:

the dot matches any character but EOLs('\r','\n'); When switched on:

the dot matches any character, including EOLs. This flag is sometimes referenced in regex tutorials as SINGLELINE, which confusingly seems opposite to MULTILINE, but in fact is orthogonal. Corresponds to "s" in Perl notation.

IGNORE_SPACES

public static final int IGNORE_SPACES

Affects how the space characters are interpeted in the expression. When switched off:

the spaces are interpreted literally; When switched on:

the spaces are ingnored, allowing an expression to be slightly more readable. Corresponds to "x" in Perl notation.

UNICODE

public static final int UNICODE

Affects whether the predefined classes("\d","\s","\w",etc) in the expression are interpreted as belonging to Unicode. When switched off:

the predefined classes are interpreted as ASCII; When switched on:

the predefined classes are interpreted as Unicode categories;

XML_SCHEMA

public static final int XML_SCHEMA

Turns on the compatibility with XML Schema regular expressions.