Since: API Level 1
package

java.util.regex

Classes | Description

Provides an implementation of regular expressions, which is useful for matching, searching, and replacing strings based on patterns.

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Interfaces

MatchResult Holds the results of a successful match of a Pattern against a given string. 

Classes

Matcher Provides a means of matching regular expressions against a given input, finding occurrences of regular expressions in a given input, or replacing parts of a given input. 
Pattern Represents a pattern used for matching, searching, or replacing strings. 

Exceptions

PatternSyntaxException Encapsulates a syntax error that occurred during the compilation of a Pattern