Hex to Cyrillic text

Question

I have hex byte string like "D09FD0B5D180D0BDD0B8D0BA" this is "Перник".

For each letter of the Cyrillic alphabet, I need 2 bytes.

For "П" I need "D0 9F".

If I use:

char letter = (char) 1055; // this is "П"

My problem is how from hex "D0 9F" to get int value "1055". Or how from "D09FD0B5D180D0BDD0B8D0BA" to convert to "Перник".

Answer 1

You didn't specified the encoding, however it appears to be UTF-8 so the character П is not encoded as 041F (dec. 1055), but as D09F (dec. 53407).

Note also that UTF-8 is a variable length encoding, so the assumption 2 byte / char may be valid for the Cyrillic alphabet but not in general.

import java.nio.charset.StandardCharsets;

public class Hex2String {
    public static String hex2String(String hex) {
        byte[] b=new byte[hex.length()/2];
        for (int i=0;i<b.length;i++) {
            b[i]=(byte) Integer.parseInt(hex, i*2, i*2+2, 16);
        }
        return new String(b, StandardCharsets.UTF_8);
    }
    
    public static void main(String[] args) {
        System.out.println(hex2String("D09FD0B5D180D0BDD0B8D0BA"));
    }
}