Secondly, it isn’t just used on websites. First off, it is free to download, so there will be no associated costs there. There are a couple more things you want to remember about Java as well.
You can allow Java content on a per-website basis, enable all Java content, or enable Javascript. If you want to turn on Java support in Firefox, there are basically three ways to do it. That being said, it is important to have Java installed or enabled on Firefox. Java is a very important programming language that many websites and applications use with more being created daily.