Class Util

HEX

public static final String HEX

formatInt

public static String formatInt(int i,
                               int radix,
                               int len)

Format an integer into the specified radix, zero-filled.

Parameters:

i - The integer to format.

radix - The radix to encode to.

len - The target length of the string. The string is zero-padded to this length, but may be longer.

Returns:

The formatted integer.

hexDump

public static String hexDump(byte[] buf,
                             String prefix)

See hexDump(byte[],int,int).

hexDump

public static String hexDump(byte[] buf,
                             int off,
                             int len,
                             String prefix)

Create a representation of the given byte array similar to the output of `hexdump -C', which is

OFFSET  SIXTEEN-BYTES-IN-HEX  PRINTABLE-BYTES

The printable bytes show up as-is if they are printable and not a newline character, otherwise showing as '.'.

Parameters:

buf - The bytes to format.

off - The offset to start at.

len - The number of bytes to encode.

Returns:

The formatted string.

toByteArray

public static byte[] toByteArray(String hex)

Convert a hexadecimal string into its byte representation.

Parameters:

hex - The hexadecimal string.

Returns:

The converted bytes.

toHexString

public static String toHexString(byte[] buf,
                                 int off,
                                 int len)

Convert a byte array to a hexadecimal string, as though it were a big-endian arbitrarily-sized integer.

Parameters:

buf - The bytes to format.

off - The offset to start at.

len - The number of bytes to format.

Returns:

A hexadecimal representation of the specified bytes.

toHexString

public static String toHexString(byte[] buf,
                                 int off,
                                 int len,
                                 char sep)

Convert a byte array to a hexadecimal string, separating octets with the given character.

Parameters:

buf - The bytes to format.

off - The offset to start at.

len - The number of bytes to format.

sep - The character to insert between octets.

Returns:

A hexadecimal representation of the specified bytes.