Hex en ligne en texte Decoder

I am having a hard time trying to convert a String containing the hex string representation to its corresponding hex string byte array.

I tried this code

public static byte[] hexStringToByteArray(String s) {    int len = s.length();    byte[] data = new byte[len / 2];    for (int i = 0; i < len; i += 2) {        data[i / 2] = (byte) (((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s                .charAt(i + 1), 16)) & 0xFF);    }    return data;}

It's not the exact value what i am looking for above code conveting "FF" --> -1.

Expecting is "FF" --> byte[] { FF }.

Ex : "01FF0A2357F01A" result should be like this byte[] { 01 FF 0A 12 57 F0 1A }.

Lets say I have a text string :"Say Hello to My Little Friend"

A function should return hex value as:

5361792048656c6c6f20746f204d79204c6974746c6520467269656e64

I am creating a app which need to retrieve a player info from a XML file. I've basically done the parsing part but encounter this problem right now.

The example of format is:

<P id="4336" f="Luka" s="MODRI&#x106;" d="1985-09-09" h="174" w="65" i="4336.png"/>

(My logic is compare first name and last name from data with user input and pull the data out from the XML file.)I need retrieve the data when user input "Luka Modric" but I know it is hard to compare "MODRIC" with "MODRIĆ" or "MODRIĆ" . Are there any better solutions that I can achieve my goal? Thanks.

I want to take an integer (that will be <= 255), to a hex string representation

e.g.: I want to pass in 65 and get out '\x41', or 255 and get '\xff'.

I've tried doing this with the struct.pack('c',65), but that chokes on anything above 9 since it wants to take in a single character string.

I'm new to python,I have a string like:

s= 'HDCF\xc3\x82\xc2\xae FTAE\xc3\x82\xc2\xae Greater China'

I want to remove all the unicode literals in a string like:

'\xc3\x82\xc2\xae'

I need output like:

'HDFC FTAE Greater China'

Can anyone help me with this?

Thank you