Note that the the Java plugin and webstart was removed a long time ago. I personally regret that the API was removed as it's a few classes and they are still u

Note that the the Java plugin and webstart was removed a long time ago. I personally regret that the API was removed as it's a few classes and they are still used. Just search JApplet on Github. It's also possible to run applets in the modern browsers with WASM or in Java IDE's as plugin.