Android Hex String to Byte Array Convert hexToByte(String input)

Description

hex To Byte

Declaration

public static byte[] hexToByte(String input) 

Method Source Code

//package com.java2s;

public class Main {

    public static byte[] hexToByte(String input) {
        byte[] output = new byte[input.length() / 2];
        String input2 = input.toLowerCase();
        for (int i = 0; i < input2.length(); i += 2) {
            output[i / 2] = hexToByte(input2.charAt(i),
                    input2.charAt(i + 1));
        }/*from   w  w w  .  j  ava2  s.  c  o m*/
        return output;
    }

    private static byte hexToByte(char char1, char char2) {
        // Returns hex String representation of byte b
        byte output = 0x00;
        if (char1 == '0') {
            output = 0x00;
        } else if (char1 == '1') {
            output = 0x10;
        } else if (char1 == '2') {
            output = 0x20;
        } else if (char1 == '3') {
            output = 0x30;
        } else if (char1 == '4') {
            output = 0x40;
        } else if (char1 == '5') {
            output = 0x50;
        } else if (char1 == '6') {
            output = 0x60;
        } else if (char1 == '7') {
            output = 0x70;
        } else if (char1 == '8') {
            output = (byte) 0x80;
        } else if (char1 == '9') {
            output = (byte) 0x90;
        } else if (char1 == 'a') {
            output = (byte) 0xa0;
        } else if (char1 == 'b') {
            output = (byte) 0xb0;
        } else if (char1 == 'c') {
            output = (byte) 0xc0;
        } else if (char1 == 'd') {
            output = (byte) 0xd0;
        } else if (char1 == 'e') {
            output = (byte) 0xe0;
        } else if (char1 == 'f') {
            output = (byte) 0xf0;
        }

        if (char2 == '0') {
            output = (byte) (output | (byte) 0x00);
        } else if (char2 == '1') {
            output = (byte) (output | (byte) 0x01);
        } else if (char2 == '2') {
            output = (byte) (output | (byte) 0x02);
        } else if (char2 == '3') {
            output = (byte) (output | (byte) 0x03);
        } else if (char2 == '4') {
            output = (byte) (output | (byte) 0x04);
        } else if (char2 == '5') {
            output = (byte) (output | (byte) 0x05);
        } else if (char2 == '6') {
            output = (byte) (output | (byte) 0x06);
        } else if (char2 == '7') {
            output = (byte) (output | (byte) 0x07);
        } else if (char2 == '8') {
            output = (byte) (output | (byte) 0x08);
        } else if (char2 == '9') {
            output = (byte) (output | (byte) 0x09);
        } else if (char2 == 'a') {
            output = (byte) (output | (byte) 0x0a);
        } else if (char2 == 'b') {
            output = (byte) (output | (byte) 0x0b);
        } else if (char2 == 'c') {
            output = (byte) (output | (byte) 0x0c);
        } else if (char2 == 'd') {
            output = (byte) (output | (byte) 0x0d);
        } else if (char2 == 'e') {
            output = (byte) (output | (byte) 0x0e);
        } else if (char2 == 'f') {
            output = (byte) (output | (byte) 0x0f);
        }
        return output;
    }
}

Related

1. toByte(String hexString)
2. hex2byte(String inputString)
3. fromHex(String hex)
4. fromHex(String hex)
5. hexToBytes(String str)
6. hexToBytes(String hexString)
7. hexToByte(char char1, char char2)
8. hexStringToByteArray(String s)
9. hexStringToBytes(String s)