Matcher.Group Method

Definition

Namespace:

Java.Util.Regex

Assembly:

Mono.Android.dll

Overloads

Group(String)	Returns the input subsequence captured by the given named-capturing group during the previous match operation.
Group()	Returns the input subsequence matched by the previous match.
Group(Int32)	Returns the input subsequence captured by the given group during the previous match operation.

Group(String)

Returns the input subsequence captured by the given named-capturing group during the previous match operation.

[Android.Runtime.Register("group", "(Ljava/lang/String;)Ljava/lang/String;", "", ApiSince=26)]
public string? Group (string name);

[<Android.Runtime.Register("group", "(Ljava/lang/String;)Ljava/lang/String;", "", ApiSince=26)>]
member this.Group : string -> string

Parameters

name

String

The name of a named-capturing group in this matcher's pattern

Returns

String

The (possibly empty) subsequence captured by the named group during the previous match, or null if the group failed to match part of the input

Attributes

RegisterAttribute

Remarks

Returns the input subsequence captured by the given named-capturing group during the previous match operation.

If the match was successful but the group specified failed to match any part of the input sequence, then null is returned. Note that some groups, for example (a*), match the empty string. This method will return the empty string when such a group successfully matches the empty string in the input.

Added in 1.7.

Java documentation for java.util.regex.Matcher.group(java.lang.String).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Group()

Returns the input subsequence matched by the previous match.

[Android.Runtime.Register("group", "()Ljava/lang/String;", "")]
public string Group ();

[<Android.Runtime.Register("group", "()Ljava/lang/String;", "")>]
abstract member Group : unit -> string
override this.Group : unit -> string

Returns

String

The (possibly empty) subsequence matched by the previous match, in string form

Implements

Group()

Attributes

RegisterAttribute

Exceptions

IllegalStateException

if no successful match has been made.

Remarks

Returns the input subsequence matched by the previous match.

For a matcher m with input sequence s, the expressions m.group() and s.substring(m.start(), m.end()) are equivalent.

Note that some patterns, for example a*, match the empty string. This method will return the empty string when the pattern successfully matches the empty string in the input.

Java documentation for java.util.regex.Matcher.group().

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Group(Int32)

Returns the input subsequence captured by the given group during the previous match operation.

[Android.Runtime.Register("group", "(I)Ljava/lang/String;", "")]
public string? Group (int group);

[<Android.Runtime.Register("group", "(I)Ljava/lang/String;", "")>]
abstract member Group : int -> string
override this.Group : int -> string

Parameters

group

Int32

The index of a capturing group in this matcher's pattern

Returns

String

The (possibly empty) subsequence captured by the group during the previous match, or null if the group failed to match part of the input

Implements

Group(Int32)

Attributes

RegisterAttribute

Exceptions

IllegalStateException

if no successful match has been made.

Remarks

Returns the input subsequence captured by the given group during the previous match operation.

For a matcher m, input sequence s, and group index g, the expressions m.group(g) and s.substring(m.start(g), m.end(g)) are equivalent.

Capturing groups are indexed from left to right, starting at one. Group zero denotes the entire pattern, so the expression m.group(0) is equivalent to m.group().

If the match was successful but the group specified failed to match any part of the input sequence, then null is returned. Note that some groups, for example (a*), match the empty string. This method will return the empty string when such a group successfully matches the empty string in the input.

Java documentation for java.util.regex.Matcher.group(int).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.