January 2014, revised September 2019
Uploaded to www.rart.com/AllowingAppletExecution

Allowing the Execution of Applets

In January 2014, Oracle initiated a number of security related restrictions that prevent the execution of applets such as those presented on the Rart webpages. This page tells you how to enable the execution of such Java applets. For users not familiar with the process or the vocabulary, a more detailed explanation is found on the Java and Rart introduction.

Revision 2019: The suggested solution worked well with Mozilla Firefox until a new version (NR. 52) of Firefox was released in March 2017. This stopped, without comment, the execution of  any Rart applets on www.rart.com. Most disappointing to me, as well as presumably to many others, since the original (1995) intent and beauty of Java was the universal ability to execute Java applets over the Internet.
As of now, Sept 2019, also Apple OS X and Chrome, as well as Microsoft Edge have stopped supporting Java applets. However, Internet Explorer still supports the execution of the Java applets on the Rart website provided you have followed the steps outlined below.  We also assume you are using the Internet Explorer browser and that you have downloaded the Java runtime system, JRE for your desktop Windows system (from for example  https://www.oracle.com/technetwork/java/javase/downloads  ):

1.    Find the Java Control Panel
        This panel can be found on your computer in different locations depending on the operating system.
       In Windows XP, it is found under the Control Panel
       In some other Windows systems, eg Windows 10, you may search for it using Search the web and Windows in the lower left corner of the screen. If  you just 
type in Java, the result  will show one of several entries  Configure Java and when you press that entry the Java Control Panel should appear

2.    Under the tab Security, find and press the button: Edit Site List . . .

3.    To the Exception Site List, add the URL of the page that invokes the applet (eg. http://www.rart.com/)
       You can now run the applet after an appropriate warning message.
       If you add the URL of the site, ( eg.
http://www.rart.com/), you may run any applets on the site after warning

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