Java test and Jenkins integration

I have written my own test framework. It is written purely in Java (it has main()) as a Maven project and it is using Selenium WebDriver.

I would like to integrate this with Jenkins so that the tests are run after deployment, is it possible?

I only found that Selenium/java tests can be integrated with Jenkins when using TestNG or JUnit. What about main() method?

Has anyone ever done that? Do you know if this is even possible?