Module seppiko.commons.utils

Package org.seppiko.commons.utils.codec

Class HexUtil

java.lang.Object

org.seppiko.commons.utils.codec.HexUtil

All Implemented Interfaces:

Serializable

public class HexUtil
extends Object
implements Serializable

Hexadecimal Encoder / Decoder utility.

Author:

Leonard Woo

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final char[]	HEXADECIMAL	Hexadecimal character array with lower letters
static final byte[]	HEXADECIMAL_DECODE_TABLE	Hexadecimal decode table and ignore case
static final int	HEXADECIMAL_LENGTH	Hexadecimal length
static final char[]	HEXADECIMAL_UPPER	Hexadecimal character array with upper letters

Method Summary

Modifier and Type	Method	Description
static byte[]	decode(char[] data)	convert hex char array to byte array
static byte[]	decode(String data, String split)	convert hex string with split to byte array
static byte[]	decodeString(String data)	convert hex string with whitespace split to byte array
static String	encode(byte[] data)	convert byte array to hex char array
static String	encode(byte[] data, boolean toLowerCase)	convert byte array to hex char array
static String	encodeString(byte[] data)	convert byte array to string with every 2 char add a space
static String	encodeString(byte[] data, String split, boolean toLowerCase)	convert byte array to string with every 2 char with split

Methods inherited from class java.lang.Object

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

Field Details

HEXADECIMAL_LENGTH

public static final int HEXADECIMAL_LENGTH

Hexadecimal length

See Also:

• Constant Field Values

HEXADECIMAL

public static final char[] HEXADECIMAL

Hexadecimal character array with lower letters

HEXADECIMAL_UPPER

public static final char[] HEXADECIMAL_UPPER

Hexadecimal character array with upper letters

HEXADECIMAL_DECODE_TABLE

public static final byte[] HEXADECIMAL_DECODE_TABLE

Hexadecimal decode table and ignore case

Method Details

encodeString

public static String encodeString(byte[] data)

convert byte array to string with every 2 char add a space

Parameters:

data - byte array data.

Returns:

string.

encodeString

public static String encodeString(byte[] data,
 String split,
 boolean toLowerCase)

convert byte array to string with every 2 char with split

Parameters:

data - byte array data.

split - string object split.

toLowerCase - true is lower case, false is upper case.

Returns:

string.

encode

public static String encode(byte[] data)

convert byte array to hex char array

Parameters:

data - byte array data.

Returns:

hex char array.

encode

public static String encode(byte[] data,
 boolean toLowerCase)

convert byte array to hex char array

Parameters:

data - byte array data.

toLowerCase - true is lowercase, false is uppercase.

Returns:

hex char array.

decodeString

public static byte[] decodeString(String data)
                           throws IllegalArgumentException,
NullPointerException

convert hex string with whitespace split to byte array

Parameters:

data - hex string.

Returns:

byte array.

Throws:

IllegalArgumentException - data include invalid character.

NullPointerException - when data or separator is null.

decode

public static byte[] decode(String data,
 String split)
                     throws IllegalArgumentException,
NullPointerException

convert hex string with split to byte array

Parameters:

data - hex string.

split - split.

Returns:

byte array.

Throws:

IllegalArgumentException - data include invalid character.

NullPointerException - when data or separator is null.

decode

public static byte[] decode(char[] data)
                     throws IllegalArgumentException,
NullPointerException

convert hex char array to byte array

Parameters:

data - hex char array.

Returns:

byte array.

Throws:

IllegalArgumentException - data include invalid character.

NullPointerException - data is null or empty.