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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