Generate Hmac SHA-1 signature via Java

gistfile1.java

import java.util.Base64;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

public class Hmac {

    private static String data = "2.00|5101603|RUB|bill|test-checking-one-way-response-from-processing|0|белый тест|paid|tel:+79167421378";
    private static String key = "123456789";

    public static void main(String[] args){
        System.out.println(getSignedBody(data, key));
    }

    private static String getSignedBody(String data, String key){
        String result = "";
        try {
            SecretKeySpec signingKey = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA1");
            Mac mac = Mac.getInstance("HmacSHA1");
            mac.init(signingKey);
            byte[] rawHmac = mac.doFinal(data.getBytes("UTF-8"));
            result = Base64.getEncoder().encodeToString(rawHmac);
        } catch (Exception e) {
            System.out.println("Failed to generate HMAC: " + e.getMessage());
        }
        return result;
    }

}