net.sourceforge.jpcap.util
Class ArrayHelper
java.lang.Object
|
+--net.sourceforge.jpcap.util.ArrayHelper
- public class ArrayHelper
- extends java.lang.Object
Utility functions for populating and manipulating arrays.
Method Summary |
static int |
extractInteger(byte[] bytes,
int pos,
int cnt)
Extract an integer from a byte array. |
static long |
extractLong(byte[] bytes,
int pos,
int cnt)
Extract a long from a byte array. |
static void |
insertLong(byte[] bytes,
long value,
int pos,
int cnt)
Insert data contained in a long integer into an array. |
static byte[] |
join(byte[] a,
byte[] b)
Join two arrays. |
static byte[] |
toBytes(long value,
int cnt)
Convert a long integer into an array of bytes. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ArrayHelper
public ArrayHelper()
join
public static byte[] join(byte[] a,
byte[] b)
- Join two arrays.
extractLong
public static long extractLong(byte[] bytes,
int pos,
int cnt)
- Extract a long from a byte array.
- Parameters:
bytes
- an array.pos
- the starting position where the integer is stored.cnt
- the number of bytes which contain the integer.- Returns:
- the long, or 0 if the index/length to use
would cause an ArrayOutOfBoundsException
extractInteger
public static int extractInteger(byte[] bytes,
int pos,
int cnt)
- Extract an integer from a byte array.
- Parameters:
bytes
- an array.pos
- the starting position where the integer is stored.cnt
- the number of bytes which contain the integer.- Returns:
- the integer, or 0 if the index/length to use
would cause an ArrayOutOfBoundsException
insertLong
public static void insertLong(byte[] bytes,
long value,
int pos,
int cnt)
- Insert data contained in a long integer into an array.
- Parameters:
bytes
- an array.value
- the long to insert into the array.pos
- the starting position into which the long is inserted.cnt
- the number of bytes to insert.
toBytes
public static byte[] toBytes(long value,
int cnt)
- Convert a long integer into an array of bytes.
- Parameters:
value
- the long to convert.cnt
- the number of bytes to convert.