| Name | Package | Description |
| CharacterArrayCharacterIterator | org.apache.regexp | Encapsulates char[] as CharacterIterator |
| RE | org.apache.regexp | RE is an efficient, lightweight regular expression evaluator/matcher
class. |
| ReaderCharacterIterator | org.apache.regexp | Encapsulates java.io.Reader as CharacterIterator |
| recompile | org.apache.regexp | 'recompile' is a command line tool that pre-compiles one or more regular expressions
for use with the regular expression matcher class 'RE'. |
| RECompiler | org.apache.regexp | A regular expression compiler class. |
| REDebugCompiler | org.apache.regexp | A subclass of RECompiler which can dump a regular expression program
for debugging purposes. |
| REDemo | org.apache.regexp | Interactive demonstration and testing harness for regular expressions classes. |
| REProgram | org.apache.regexp | A class that holds compiled regular expressions. |
| RETest | org.apache.regexp | Data driven (and optionally interactive) testing harness to exercise regular
expression compiler and matching engine. |
| REUtil | org.apache.regexp | This is a class that contains utility helper methods for this package. |
| StreamCharacterIterator | org.apache.regexp | Encapsulates java.io.InputStream as CharacterIterator. |
| StringCharacterIterator | org.apache.regexp | Encapsulates String as CharacterIterator. |