Package com.landawn.abacus.util

Class Hex

  • public class Hex
extends Object
    Note: copied from Apache commons-codec: https://commons.apache.org/proper/commons-codec. Converts hexadecimal Strings. The charset used for certain operation can be set, the default is set in #DEFAULT_CHARSET_NAME This class is thread-safe.
    Since:
    1.1
    Version:
    $Id: Hex.java 1619948 2014-08-22 22:53:55Z ggregory $

    • Constructor Summary

      Constructors 
      Constructor Description
      Hex()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static byte[] decode​(char[] data)
      Converts an array of characters representing hexadecimal values into an array of bytes of those same values.
      static byte[] decode​(String data)  
      static char[] encode​(byte[] data)
      Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order.
      static char[] encode​(byte[] data, boolean toLowerCase)
      Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order.
      static String encodeToString​(byte[] data)
      Converts an array of bytes into a String representing the hexadecimal values of each byte in order.
      static String encodeToString​(byte[] data, boolean toLowerCase)
      Converts an array of bytes into a String representing the hexadecimal values of each byte in order.

    • Constructor Detail

      • Hex

        public Hex()

    • Method Detail

      • encode

        public static char[] encode​(byte[] data)
        Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order. The returned array will be double the length of the passed array, as it takes two characters to represent any given byte.
        Parameters:
        data - a byte[] to convert to Hex characters
        Returns:
        A char[] containing hexadecimal characters

      • encode

        public static char[] encode​(byte[] data,
                            boolean toLowerCase)
        Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order. The returned array will be double the length of the passed array, as it takes two characters to represent any given byte.
        Parameters:
        data - a byte[] to convert to Hex characters
        toLowerCase - true converts to lowercase, false to uppercase
        Returns:
        A char[] containing hexadecimal characters
        Since:
        1.4

      • encodeToString

        public static String encodeToString​(byte[] data)
        Converts an array of bytes into a String representing the hexadecimal values of each byte in order. The returned String will be double the length of the passed array, as it takes two characters to represent any given byte.
        Parameters:
        data - a byte[] to convert to Hex characters
        Returns:
        A String containing hexadecimal characters
        Since:
        1.4

      • encodeToString

        public static String encodeToString​(byte[] data,
                                    boolean toLowerCase)
        Converts an array of bytes into a String representing the hexadecimal values of each byte in order. The returned String will be double the length of the passed array, as it takes two characters to represent any given byte.
        Parameters:
        data - a byte[] to convert to Hex characters
        toLowerCase - true converts to lowercase, false to uppercase
        Returns:
        A String containing hexadecimal characters
        Since:
        1.4

      • decode

        public static byte[] decode​(char[] data)
                     throws IllegalArgumentException
        Converts an array of characters representing hexadecimal values into an array of bytes of those same values. The returned array will be half the length of the passed array, as it takes two characters to represent any given byte. An exception is thrown if the passed char array has an odd number of elements.
        Parameters:
        data - An array of characters containing hexadecimal digits
        Returns:
        A byte array containing binary data decoded from the supplied char array.
        Throws:
        IllegalArgumentException - the illegal argument exception