cz.d1x.dxcrypto

Class Encoding

java.lang.Object

cz.d1x.dxcrypto.Encoding

public class Encoding
extends Object

Utilities for internal operations with encoding.

Author:

Zdenek Obst, zdenek.obst-at-gmail.com

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT

Constructor Summary

Constructors

Constructor and Description
Encoding()

Method Summary

Modifier and Type	Method and Description
static void	checkEncoding(String encoding) Checks whether given encoding (name) is supported.
static byte[]	fromHex(String hex) Converts given String in HEX representation to byte array representation.
static byte[]	getBytes(String text) Converts given String to byte array representation using DEFAULT.
static byte[]	getBytes(String text, String encoding) Converts given String with given encoding to byte array representation.
static String	getString(byte[] text) Converts given byte array to String using DEFAULT.
static String	getString(byte[] text, String encoding) Converts given byte array to String with given encoding.
static String	toHex(byte[] bytes) Converts given byte array into String in HEX representation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT

public static final String DEFAULT

See Also:

Constant Field Values

Constructor Detail

Encoding

public Encoding()

Method Detail

toHex

public static String toHex(byte[] bytes)
                    throws IllegalArgumentException

Converts given byte array into String in HEX representation.

Parameters:

bytes - bytes to be converted

Returns:

HEX representation (lower case characters)

Throws:

IllegalArgumentException - possible exception if input is null or cannot be converted

fromHex

public static byte[] fromHex(String hex)
                      throws IllegalArgumentException

Converts given String in HEX representation to byte array representation.

Parameters:

hex - HEX string input to be converted

Returns:

byte array representation

Throws:

IllegalArgumentException - possible exception if input is null or cannot be converted

checkEncoding

public static void checkEncoding(String encoding)
                          throws IllegalArgumentException

Checks whether given encoding (name) is supported.

Parameters:

encoding - encoding to check

Throws:

IllegalArgumentException - possible exception if encoding is null or not supported

getBytes

public static byte[] getBytes(String text,
                              String encoding)
                       throws IllegalArgumentException

Converts given String with given encoding to byte array representation. It is recommended to check your encoding via checkEncoding(String).

Parameters:

text - text to be converted

encoding - encoding of text

Returns:

byte array representation

Throws:

IllegalArgumentException - possible exception if text is null or encoding is not supported

getBytes

public static byte[] getBytes(String text)

Converts given String to byte array representation using DEFAULT.

Parameters:

text - text to be converted

Returns:

byte array representation

Throws:

IllegalArgumentException - possible exception if text is null or encoding is not supported

getString

public static String getString(byte[] text,
                               String encoding)
                        throws IllegalArgumentException

Converts given byte array to String with given encoding. It is recommended to check your encoding via checkEncoding(String).

Parameters:

text - text bytes to be converted

encoding - encoding for output

Returns:

encoded text

Throws:

IllegalArgumentException - possible exception if text bytes are null or encoding is not supported

getString

public static String getString(byte[] text)

Converts given byte array to String using DEFAULT.

Parameters:

text - text bytes to be converted

Returns:

encoded text

Throws:

IllegalArgumentException - possible exception if text bytes are null or encoding is not supported