| Package | Description | 
|---|---|
| java.util | Contains the collections framework, legacy collection classes, event model,
date and time facilities, internationalization, and miscellaneous utility
classes (a string tokenizer, a random-number generator, and a bit array). | 
| java.util.regex | Classes for matching character sequences against patterns specified by regular
expressions. | 
| Class and Description | 
|---|
| MatchResult The result of a match operation. | 
| Pattern A compiled representation of a regular expression. | 
| Class and Description | 
|---|
| Matcher An engine that performs match operations on a character sequence by interpreting a  Pattern. | 
| MatchResult The result of a match operation. | 
| Pattern A compiled representation of a regular expression. | 
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