org.jboss.resteasy.util

Class Hex

java.lang.Object

org.jboss.resteasy.util.Hex

public class Hex
extends Object

Constructor Summary

Constructors

Constructor and Description
Hex()

Method Summary

Modifier and Type	Method and Description
static byte[]	decodeHex(String str) Converts an array of characters representing hexidecimal values into an array of bytes of those same values.
static String	encodeHex(byte[] data) Converts an array of bytes into an array of characters representing the hexidecimal values of each byte in order.
protected static int	toDigit(char ch, int index) Converts a hexadecimal character to an integer.

Methods inherited from class java.lang.Object

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

Constructor Detail

Hex

public Hex()

Method Detail

decodeHex

public static byte[] decodeHex(String str)

Converts an array of characters representing hexidecimal values into an array of bytes of those same values. The returned array will be half the length of the passed array, as it takes two characters to represent any given byte. An exception is thrown if the passed char array has an odd number of elements.

Parameters:

str - An array of characters containing hexidecimal digits

Returns:

A byte array containing binary data decoded from the supplied char array.

Throws:

RuntimeException - Thrown if an odd number or illegal of characters is supplied

toDigit

protected static int toDigit(char ch,
                             int index)

Converts a hexadecimal character to an integer.

Parameters:

ch - A character to convert to an integer digit

index - The index of the character in the source

Returns:

An integer

encodeHex

public static String encodeHex(byte[] data)

Converts an array of bytes into an array of characters representing the hexidecimal values of each byte in order. The returned array will be double the length of the passed array, as it takes two characters to represent any given byte.

Parameters:

data - a byte[] to convert to Hex characters

Returns:

A char[] containing hexidecimal characters