A small set of interfaces used by the various implementations in the sub-packages.

Definitive implementations of commonly used encoders and decoders.

Codec is currently comprised of a modest set of utilities and a simple framework for String encoding and decoding in three categories: Binary Encoders, Language Encoders, and Network Encoders.

Binary Encoders

org.apache.commons.codec.binary.Base64 Provides Base64 content-transfer-encoding as defined in RFC 2045 Production
org.apache.commons.codec.binary.Hex Converts an array of bytes into an array of characters representing the hexidecimal values of each byte in order Production

Language Encoders

Codec contains a number of commonly used language and phonetic encoders

org.apache.commons.codec.language.Soundex Implementation of the Soundex algorithm. Production
org.apache.commons.codec.language.Metaphone Implementation of the Metaphone algorithm. Production

Network Encoders

Codec contains network related encoders Implements the 'www-form-urlencoded' encoding scheme. Production


BinaryDecoder Defines common decoding methods for byte array decoders. 
BinaryEncoder Defines common encoding methods for byte array encoders. 

Provides the highest level of abstraction for Decoders. 


Provides the highest level of abstraction for Encoders. 

StringDecoder Decodes a String into a String. 
StringEncoder Encodes a String into a String. 


CharEncoding Character encoding names required of every implementation of the Java platform. 
StringEncoderComparator Strings are comparable, and this comparator allows you to configure it with an instance of a class which implements StringEncoder. 


DecoderException Thrown when a Decoder has encountered a failure condition during a decode. 
EncoderException Thrown when there is a failure condition during the encoding process.