All the major browsers seem to have dumped Java. I frequent some sites such as 2draw.net that allow you to use Java applets to create art on the web, but some of these seem to be failing with recent updates to Java and browsers.
I just acquired "Pale Moon browser" in the hopes that it still supports Java, and found it hard to use.
What's the best solution for running Java applets on the web via a browser on Windows?
Running Java applets on the web via the Java browser plug-in (which uses the old "Netscape Plugin Application Programming Interface": NPAPI), is generally insecure. In fact, loading any plug-ins via NPAPI is considered insecure, so all the major browser makers are moving away from it.
Oracle recommends Microsoft Internet Explorer for people on Windows who still want to run Java applets in their browser. Internet Explorer 11 still supports NPAPI plug-ins, including Java. You can even run it on Windows 10. You don't have to run Edge, Microsoft's modern browser, if you don't want to.
Mozilla Firefox's "Extended Support Release" (ESR) apparently still supports NPAPI and thus Java.
You may need to go to Java.com to download and install the latest version of Java, to make sure the latest Java NPAPI web browser plug-in gets installed correctly.
Because of these browser changes, modern websites have abandoned Java and Flash for interactive features. Art creation "apps" on the web are built with native web technologies like JavaScript (which is a totally different technology than Java, despite the name) and canvas nowadays. These are safer technologies that are built into every browser.
If you really still need to run a Java applet after the last NPAPI browsers are gone, there may be ways to download them and run them from your own hard drive.
https://superuser.com/questions/1213341/how-to-get-a-browser-that-supports-java