org.gridbus.broker.farming.alchemi
Class Conversion

java.lang.Object
  |
  +--org.gridbus.broker.farming.alchemi.Conversion

public class Conversion

extends java.lang.Object

This class contains some methods for conversion of byte arrays, hex values etc.

Constructor Summary

Conversion()

Method Summary

static byte[]	bigIntegerToUnsigedBytes(java.math.BigInteger b) Converts a BigInteger to a byte array.
static java.lang.String	byteArrayToString(byte[] in, java.lang.String encoding) Use if you don't want to have to catch a million UnsupportedEncodingExceptions.
static java.lang.String	bytesToHexString(byte[] inByteArray) Converts a byte[] array into a Hex string
static java.lang.String	bytesToHexString(byte[] inByteArray, int offset, int len) Converts the given byte array into a hex string representation.
static int	bytesToInt(byte[] bytes) This function accepts a number of bytes and returns an integer.
static long	bytesToLong(byte[] bytes) This function accepts a number of bytes and returns a long integer.
static byte[]	hexStringToBytes(java.lang.String str) This method accepts a hex string and returns a byte array.
static byte[]	intToBytes(int i) Converts a integer to a byte array representation.
static void	longToBytes(long l, byte[] b, int offset, int len) Converts a long integer to a byte array representation.
static byte[]	longToBytes(long l, int len) Converts a long integer to a byte array representation.
static byte[]	stringToByteArray(java.lang.String in, java.lang.String encoding) Use if you don't want to have to catch a million UnsupportedEncodingExceptions.
static int	unsignedByteToInt(byte i) Converts a byte in range -128 <= i <= 127 to an int in range 0 <= i <= 255.

Methods inherited from class java.lang.Object

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

Constructor Detail

Conversion

public Conversion()

Method Detail

bytesToHexString

public static java.lang.String bytesToHexString(byte[] inByteArray)

Converts a byte[] array into a Hex string

Parameters:

inByteArray -

Returns:

string

bytesToHexString

public static java.lang.String bytesToHexString(byte[] inByteArray,
                                                int offset,
                                                int len)

Converts the given byte array into a hex string representation.

Parameters:

inByteArray -

offset -

len -

Returns:

a hex String representation of the byte array.

bytesToLong

public static long bytesToLong(byte[] bytes)

This function accepts a number of bytes and returns a long integer. Note that if the input is 8 bytes, and the high bit of the 0 byte is set, this will come out negative.

Parameters:

bytes - the byte array to convert to a long integer representation.

Returns:

a long integer representation of the byte array.

bytesToInt

public static int bytesToInt(byte[] bytes)

This function accepts a number of bytes and returns an integer. Note that if the input is 4 bytes, and the high bit of the 0 byte is set, this will come out negative.

Parameters:

bytes - the byte array to convert to a long integer representation.

Returns:

a long integer representation of the byte array.

hexStringToBytes

public static byte[] hexStringToBytes(java.lang.String str)

This method accepts a hex string and returns a byte array. The string must represent an integer number of bytes.

Parameters:

str - - the hex string to convert to byte array representation.

Returns:

the byte array representation of the hex string.

intToBytes

public static byte[] intToBytes(int i)

Converts a integer to a byte array representation.

Parameters:

i - the integer to convert to byte array representation.

Returns:

the byte array representation of the integer.

longToBytes

public static byte[] longToBytes(long l,
                                 int len)

Converts a long integer to a byte array representation. If the target array is shorter than needed, the hi bytes of the integer will be truncated.

Parameters:

l - the long integer to convert to byte array representation.

len - the size of the byte array to return

Returns:

the byte array representation of the long integer.

longToBytes

public static void longToBytes(long l,
                               byte[] b,
                               int offset,
                               int len)

Converts a long integer to a byte array representation. If the target array is shorter than needed, the hi bytes of the integer will be truncated.

Parameters:

l - the long integer to convert to byte array representation.

b -

offset -

len - the size of the byte array to return

unsignedByteToInt

public static int unsignedByteToInt(byte i)

Converts a byte in range -128 <= i <= 127 to an int in range 0 <= i <= 255.

Parameters:

i - the byte to convert

Returns:

the converted integer

stringToByteArray

public static byte[] stringToByteArray(java.lang.String in,
                                       java.lang.String encoding)

Use if you don't want to have to catch a million UnsupportedEncodingExceptions.

Parameters:

in -

encoding -

Returns:

byte[]

byteArrayToString

public static java.lang.String byteArrayToString(byte[] in,
                                                 java.lang.String encoding)

Use if you don't want to have to catch a million UnsupportedEncodingExceptions.

Parameters:

in -

encoding -

Returns:

String

bigIntegerToUnsigedBytes

public static byte[] bigIntegerToUnsigedBytes(java.math.BigInteger b)

Converts a BigInteger to a byte array.

Parameters:

b - the java.math.BigInteger to convert to a byte array

Returns:

the BigInteger converted to a byte array