How do I get this Java Applet game with multiple .jar and HTML files to run?

19 hours ago 3
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I want to play this obscure Java-based game from 2000, one that was graciously provided by the Internet Archive (https://archive.org/details/diamond-mine-java).
The contents of the game's files look like this:
Image is here
The uploader of the game on IA says to run it in a Java Applet Viewer. I know virtually nothing about Java, but I did search up some tutorials, yet they only discuss how to run a singular .java file with an HTML loader. In my case, I have two separate .jar files that I'm assuming need to run together for the game to work, each having their own HTML indices. There's also two separate folders located inside the main folder for the game's images and sounds.
I don't wanna spend hours of my day searching how to get something like this to run when every tutorial I find only discusses running one .java file at a time, not two .jar files, so how can I get the game to run?

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