edu.virginia.cs.mng.hypercast
Class ByteArrayUtility

java.lang.Object
  |
  +--edu.virginia.cs.mng.hypercast.ByteArrayUtility

public class ByteArrayUtility

extends java.lang.Object

This class contains some general functions for reading values from a byte array and for writing values to a byte array.

Constructor Summary

ByteArrayUtility()

Method Summary

static boolean	isBytesZero(byte[] data, int start_index, int length) Checks out if a certain part of a byte array is all zero or not
static void	setBytesZero(byte[] data, int start_index, int length) Sets a certain part of a byte array to all zeros
static byte[]	toByteArray(int value) Converts an integer to a byte array
static byte[]	toByteArray(long value) Converts a long to a byte array
static byte[]	toByteArray(short value) Converts an short integer to a byte array
static int	toInteger(byte[] data, int index) Converts a byte array to an integer
static long	toLong(byte[] data, int index) Converts a byte array to a long integer
static short	toShort(byte[] data, int index) Converts a byte array to a short integer

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteArrayUtility

public ByteArrayUtility()

Method Detail

toShort

public static short toShort(byte[] data,
                            int index)

Converts a byte array to a short integer

Parameters:

data - a byte array

index - a starting index in the array

Returns:

a short integer

Throws:

ArrayOutofBounds -

toInteger

public static int toInteger(byte[] data,
                            int index)

Converts a byte array to an integer

Parameters:

data - a byte array

index - a starting index in the array

Returns:

an integer

Throws:

ArrayOutofBounds -

toLong

public static long toLong(byte[] data,
                          int index)

Converts a byte array to a long integer

Parameters:

data - a byte array

index - a starting index in the array

Returns:

a long integer

Throws:

ArrayOutofBounds -

toByteArray

public static byte[] toByteArray(short value)

Converts an short integer to a byte array

Parameters:

value - a short integer

Returns:

a byte array representing the short integer

toByteArray

public static byte[] toByteArray(int value)

Converts an integer to a byte array

Parameters:

value - an integer

Returns:

a byte array representing the integer

toByteArray

public static byte[] toByteArray(long value)

Converts a long to a byte array

Parameters:

longvalue - a long integer

Returns:

a byte array representing the long integer

isBytesZero

public static boolean isBytesZero(byte[] data,
                                  int start_index,
                                  int length)

Checks out if a certain part of a byte array is all zero or not

Parameters:

data - a byte array

start_index - the start position to check

length - the total length of bytes to be checked

Returns:

true, if all the bytes checked out to be all zero, false if not

setBytesZero

public static void setBytesZero(byte[] data,
                                int start_index,
                                int length)

Sets a certain part of a byte array to all zeros

Parameters:

data - a byte array

start_index - the start position to set

length - the total length of bytes to be set