Java Application on a webpage

I have a complete and pure Java project (GUI game) which I want to run it on my website.

What is the best to do without creating the whole java project from scratch or is there any technologies I can use to embedded my java project on my website.

I know it became more difficult to do this as most broswer do not support java anymore. I know there is a way to do using Java Web Application using Apache Tomcat, but I do not want to do route. I am trying to find more easier and better to solution to this

Thank you