org.ldaptive.io

Class Hex

java.lang.Object

org.ldaptive.io.Hex

public final class Hex
extends java.lang.Object

Utility for hexidecimal encoding and decoding.

Field Summary

Fields

Modifier and Type	Field and Description
private static byte[]	DECODE Decode table which stores characters from 0 to f.
private static char[]	HEX_CHARS Hexidecimal characters.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Hex() Default constructor.

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(char[] value) This will convert the supplied value from a hex encoded string.
protected static int	decode(char[] hex, int i) Decodes the supplied character to it's corresponding nibble.
static char[]	encode(byte[] value) This will convert the supplied value to a hex encoded string.

Methods inherited from class java.lang.Object

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

Field Detail

HEX_CHARS

private static final char[] HEX_CHARS

Hexidecimal characters.

DECODE

private static final byte[] DECODE

Decode table which stores characters from 0 to f. Anything higher than 'f' is invalid so that is the max size of the array.

Constructor Detail

Hex

private Hex()

Default constructor.

Method Detail

encode

public static char[] encode(byte[] value)

This will convert the supplied value to a hex encoded string. Returns null if the supplied value is null.

Parameters:

value - to hex encode

Returns:

hex encoded value

decode

public static byte[] decode(char[] value)

This will convert the supplied value from a hex encoded string. Returns null if the supplied value is null.

Parameters:

value - to hex decode

Returns:

hex decoded value

Throws:

java.lang.IllegalArgumentException - if value is not valid hexidecimal

decode

protected static int decode(char[] hex,
                            int i)

Decodes the supplied character to it's corresponding nibble.

Parameters:

hex - to read character from

i - index of hex to read

Returns:

0-15 integer

Throws:

java.lang.IllegalArgumentException - if the character is not valid hex