com.landawn.abacus.util

Class Hex

java.lang.Object

com.landawn.abacus.util.Hex

public final class Hex
extends Object

Note: copied from Apache commons-codec: https://commons.apache.org/proper/commons-codec. Converts hexadecimal Strings. The charset used for certain operation can be set, the default is set in #DEFAULT_CHARSET_NAME This class is thread-safe.

Since:

1.1

Version:

$Id: Hex.java 1619948 2014-08-22 22:53:55Z ggregory $

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(char[] data) Converts an array of characters representing hexadecimal values into an array of bytes of those same values.
static byte[]	decode(String data)
static char[]	encode(byte[] data) Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order.
static char[]	encode(byte[] data, boolean toLowerCase) Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order.
static String	encodeToString(byte[] data) Converts an array of bytes into a String representing the hexadecimal values of each byte in order.
static String	encodeToString(byte[] data, boolean toLowerCase) Converts an array of bytes into a String representing the hexadecimal values of each byte in order.

Methods inherited from class java.lang.Object

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

Method Detail

encode

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

Converts an array of bytes into an array of characters representing the hexadecimal 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 hexadecimal characters

encode

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

Converts an array of bytes into an array of characters representing the hexadecimal 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

toLowerCase - true converts to lowercase, false to uppercase

Returns:

A char[] containing hexadecimal characters

Since:

1.4

encodeToString

public static String encodeToString(byte[] data)

Converts an array of bytes into a String representing the hexadecimal values of each byte in order. The returned String 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 String containing hexadecimal characters

Since:

1.4

encodeToString

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

Converts an array of bytes into a String representing the hexadecimal values of each byte in order. The returned String 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

toLowerCase - true converts to lowercase, false to uppercase

Returns:

A String containing hexadecimal characters

Since:

1.4

decode

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

Parameters:

data -

Returns:

Throws:

IllegalArgumentException - the illegal argument exception

decode

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

Converts an array of characters representing hexadecimal 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. data An array of characters containing hexadecimal digits

Returns:

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

Throws:

IllegalArgumentException - the illegal argument exception