Converting a set of strings to a byte[] array

Question

I am tring to convert a set of strings to a byte[] array. At first, I do something like this to convert a byte array to a string:

public String convertByte(byte[         


        

Answer 1

hexToInt should be like this

private static int hexToInt(char c1, char c2) {
    return (Character.digit(c1, 16) << 4) + Character.digit(c2, 16);
}

Otherwise CA returns AA in byte.