posted 2 months ago
Is it possible for you to drop that course? I would strongly suggest you do that. Because yes, as you say, Java hasn't supported applets for quite a while now. So there's no point in taking a course which thinks that applets are a topic to be dealt with.
But if not, then your teacher ought to explain to you how to run applets -- I googled how to do it and didn't find anything simple, but it looks to me like jGrasp might work if you install Java 8 (nothing later).