Class 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.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      static int[] DEC  
    • Constructor Summary

      Constructors 
      Constructor Description
      HexUtils()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      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.
      static java.lang.String toHexString​(int value)
      Like Integer.toHexString(), but always returns a string of length 8
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • DEC

        public static final int[] DEC
    • Constructor Detail

      • HexUtils

        public HexUtils()
    • Method Detail

      • 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
      • toHexString

        public static java.lang.String toHexString​(int value)
        Like Integer.toHexString(), but always returns a string of length 8