MD5

package main;

import javax.xml.bind.DatatypeConverter;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Main {
    public static void main(String[] args) {
        String name = "ghost";
        try {
            byte[] digest = MessageDigest.getInstance("MD5").digest(name.getBytes());
            String hash = DatatypeConverter.printHexBinary(digest).toUpperCase();
            System.out.println(hash);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
    }

}