com.jaccal.util
Class NumUtil

java.lang.Object
  com.jaccal.util.NumUtil

public class NumUtil

extends Object

A utility class mainly used for display of bytes to string and vice versa

Author:

Chang Sau Sheong

Field Summary

private static char[]	hexChar
private static String	hexits

Constructor Summary

NumUtil()

Method Summary

static int	getUnsignedValue(byte b) Get the unsigned value of a byte.
static String	hex2String(byte[] b) Convert a byte array into its hexadecimal string representation.
static int	HexToDec(int hex) Convert from hexadecimal base to decimal base.
static byte[]	int2ByteArray(int inCode) Convert an integer into a byte array.
static String	int2HexString(int in) Convert an integer into its hexadecimal String representation.
static String	toHexString(byte[] b) Convert a byte array into its hexadecimal string representation.
static byte[]	toStringHex(String s) Convert a String (hexadecimal representation of a bytes) into a byte array.

Methods inherited from class java.lang.Object

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

Field Detail

hexChar

private static char[] hexChar

hexits

private static String hexits

Constructor Detail

NumUtil

public NumUtil()

Method Detail

toHexString

public static String toHexString(byte[] b)

Convert a byte array into its hexadecimal string representation. A space character is added in between each byte value. Example: byte [] b = {0x00,0x11,0x22,0xAA}, the returned String will be "00 11 22 AA"

Parameters:

b - the byte array to convert into a String

Returns:

The String representation of the byte array

hex2String

public static String hex2String(byte[] b)

Convert a byte array into its hexadecimal string representation. No space character is added in between each byte value. Example: byte [] b = {0x00,0x11,0x22,0xAA}, the returned String will be "001122AA"

Parameters:

b -

Returns:

The hexadecimal representation of the byte array

HexToDec

public static int HexToDec(int hex)

Convert from hexadecimal base to decimal base.

Parameters:

hex -

Returns:

The integer representation of the hexadecimal number

toStringHex

public static byte[] toStringHex(String s)

Convert a String (hexadecimal representation of a bytes) into a byte array. Example: "112233AA", the returned byte[] will be: {0x11,0x22,0x33,0xAA}

Parameters:

s - the String to convert

Returns:

The String representation of the bytes

int2ByteArray

public static byte[] int2ByteArray(int inCode)

Convert an integer into a byte array. The returned byte array is 4 byte length.

Parameters:

inCode -

Returns:

A byte array

int2HexString

public static String int2HexString(int in)

Convert an integer into its hexadecimal String representation. Example: in = 0xAA11EECC, the returned String will be "AA11EECC"

Parameters:

in -

Returns:

The String version of the integer

getUnsignedValue

public static int getUnsignedValue(byte b)

Get the unsigned value of a byte.

Parameters:

b -

Returns:

An unsigned integer of the value