The website doesn’t mention about this. The example at https://merchant.smoovpay.com/integration shows only ASP, .NET and PHP.
You can code your website in JSP as long as you pass the required parameters to us in the right format (HTML).
We suggest that you use the following methods
1. Embed the Payment Button
2. Signature Generation
4. [Optional] SmoovPay Transaction Response (STR) Parameters
Code that you need to take note is in our "2. Signature Generation" you need to hash our signature to ensure a more secure payment.
PHP Sample code:
$utfString = mb_convert_encoding($dataToBeHashed, "UTF-8");,
$signature = sha1($utfString, false);
You need to find a JSP way to hash it correctly.