com.sun.spot.util
Class CRC

java.lang.Object
  com.sun.spot.util.CRC

public class CRC
extends Object

Standalone class to provide 16-bit crc calculations

Constructor Summary

CRC()

Method Summary

static short	crc(byte[] buf, int offset, int len) Return the CRC of the specified part of a byte array.
static short	crc(InputStream stream, int flashedByteCount) Return the CRC value of the specified number of bytes from an InputStream.

Methods inherited from class java.lang.Object

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

Constructor Detail

CRC

public CRC()

Method Detail

crc

public static short crc(byte[] buf,
                        int offset,
                        int len)

Return the CRC of the specified part of a byte array.

Parameters:

buf - source of bytes

offset - offset in buf to first byte

len - number of bytes to include in calculation

Returns:

16-bit CRC value

crc

public static short crc(InputStream stream,
                        int flashedByteCount)
                 throws IOException

Return the CRC value of the specified number of bytes from an InputStream.

Parameters:

stream - to read bytes from

flashedByteCount - number of bytes to read

Returns:

16-bit CRC value

Throws:

IOException