Method Detail

• public static String bytesToHexDump(byte[] data, int ofs, int len)

  Convert a byte array into a formatted hex dump.

  Parameters:

  data - byte array

  ofs - start offset for dump

  len - number of bytes to dump

  Returns:

  formatted string representation of data

• public static String bytesToHexDump(byte[] data)

  Convert a byte array into a formatted hex dump.

  Parameters:

  data - byte array

  Returns:

  formatted string representation of data

• public static String bytesToHexString(byte[] data)

  Convert from a byte array into a hexadecimal string.

  Parameters:

  data - byte array

  Returns:

  hexadecimal representation of the array

• public static void closeQuietly(InputStream is)

  close input stream quietly.

  Parameters:

  is - InputStream

• public static void closeQuietly(OutputStream os)

  close output stream quietly.

  Parameters:

  os - OutputStream

• public static void closeQuietly(Socket sock)

  close socket quietly.

  Parameters:

  sock - Socket

• public static void closeQuietly(DatagramSocket sock)

  close multicast socket quietly.

  Parameters:

  sock - Socket

• public static String formatMessage(Message msg, Object... args)

  Convenience method for pretty printing of messages. args are printed with spaces between them. Null or NaN arguments are ignored. If an arg ends with a ":", it is interpreted as a keyword associated with the following argument, and is only printed if the next argument is non-null. If an arg begins with a ":", it is interpreted as a suffix associated with the following argument, and is only printed if the next argument is non-null. Additionally, if the suffix ends with a "s?" and the agument is integer, the "s" is dropped if the argument is 1, and included if it is not. The "?" is dropped. This is useful to print singlular/plural counts.

  Parameters:

  msg - message to print

  args - details of message to print

  Returns:

  formatted string

• public static byte[] gunzip(byte[] data)

  Uncompress byte array.

  Parameters:

  data - data to uncompress

  Returns:

  uncompressed data, or null if decompression unsuccessful

• public static byte[] gzip(byte[] data)

  Compress byte array.

  Parameters:

  data - data to compress

  Returns:

  compressed data, or null if compression unsuccessful

• public static byte[] hexStringToBytes(String s)

  Convert from a hexadecimal string to a byte array.

  Parameters:

  s - hexadecimal representation of the data

  Returns:

  byte array, null on error

• public static String locationToString(double[] location)

  Convert location array into a printable string.

  Parameters:

  location - array with location information

  Returns:

  string representation of location information

• public static Float round(Float x, int n)

  Round off to n decimal places.

  Parameters:

  x - value to round off

  n - number of decimal places to round to

  Returns:

  rounded value

• public static Float round(Double x, int n)

  Round off to n decimal places.

  Parameters:

  x - value to round off

  n - number of decimal places to round to

  Returns:

  rounded value

• public static String typeToString(int type)

  Convert frame type into a printable string.

  Parameters:

  type - frame type

  Returns:

  string representation of frame type