Download java applet from webpage

Is there any way to download an applet embedded in a webpage of a site www.abc.com¹, to one's system?

Or is it possible to extract its code for offline use?

E.G. http://www.falstad.com/dotproduct/

Can Java applets run from a web browser?

Applets are run inside a web browser via the web browser's "Java Plug-in". This "Java Plug-in" provides a "Java Console", for managing the Java Plug-in and the applets.

For the link provided, I see the link "Zip archive of this applet.". It contains the applet jar, html page and the java source file.

You can try to inspect the page source to see the archive file it is using. In this case, it appears as if it is using http://www.falstad.com/dotproduct/dotproduct.jar. You can use this in a project, but the source will not be attached.