org.apache.catalina.util
Class HexUtils
java.lang.Object
org.apache.catalina.util.HexUtils
- public final class HexUtils
- extends java.lang.Object
Library of utility methods useful in dealing with converting byte arrays
to and from strings of hexadecimal digits.
- Author:
- Craig R. McClanahan
Field Summary |
static int[] |
DEC
|
Method Summary |
static java.lang.String |
convert(byte[] bytes)
Convert a byte array into a printable format containing a
String of hexadecimal digit characters (two per byte). |
static byte[] |
convert(java.lang.String digits)
Convert a String of hexadecimal digits into the corresponding
byte array by encoding each two hexadecimal digits as a byte. |
static int |
convert2Int(byte[] hex)
Convert 4 hex digits to an int, and return the number of converted
bytes. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DEC
public static final int[] DEC
HexUtils
public HexUtils()
convert
public static byte[] convert(java.lang.String digits)
- Convert a String of hexadecimal digits into the corresponding
byte array by encoding each two hexadecimal digits as a byte.
- Parameters:
digits
- Hexadecimal digits representation
- Throws:
java.lang.IllegalArgumentException
- if an invalid hexadecimal digit
is found, or the input string contains an odd number of hexadecimal
digits
convert
public static java.lang.String convert(byte[] bytes)
- Convert a byte array into a printable format containing a
String of hexadecimal digit characters (two per byte).
- Parameters:
bytes
- Byte array representation
convert2Int
public static int convert2Int(byte[] hex)
- Convert 4 hex digits to an int, and return the number of converted
bytes.
- Parameters:
hex
- Byte array containing exactly four hexadecimal digits
- Throws:
java.lang.IllegalArgumentException
- if an invalid hexadecimal digit
is included
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