Broken Java Installation

[stychokiller]

How do I fix this:

Neither Konqueror or Firefox can run java applets.
I do know that java itself works when I run the following:
java -jar /usr/local/eningeering/logisim-generic-2.7.1.jar

java -version reports:
java version "1.7.0_65"
OpenJDK Runtime Environment (IcedTea 2.5.3) (7u71-2.5.3-0ubuntu0.14.04.1)
OpenJDK Server VM (build 24.65.b04, mixed mode)

[claydoh]

Do you have the iced-tea plugin installed? That should get you going.

Sent from my Verizon HTC Droid DNA smartphone running an early cyanogenmod 12 rom, with Android 5 Lollipop, via Tapatalk, as if phone stats really matter

[stychokiller]

Do you have the iced-tea plugin installed? That should get you going.

Sent from my Verizon HTC Droid DNA smartphone running an early cyanogenmod 12 rom, with Android 5 Lollipop, via Tapatalk, as if phone stats really matter

Si, IcedTea plugin is installed. Further troubleshooting reveals that Rekonq can run (local) java applets with no
problem. I'm going to download Opera and see if it has any issues with java applets, 'cause Chromium certainly does.

[claydoh]

Recent chrome/chromium versions (without npapi support) won't run java applets period.
Might you need to adjust security settings in java?
http://www.java.com/en/download/help/java_blocked.xml

[stychokiller]

Recent chrome/chromium versions (without npapi support) won't run java applets period.
Might you need to adjust security settings in java?
http://www.java.com/en/download/help/java_blocked.xml

The proposed solution makes reference to using jcontrol to add exceptions to the trusted list(s).
Guess what, java-7-openjdk-i386 DOES NOT have jcontrol!
jdk1.8.0_25 does have jcontrol, but it's just as broken as java-7-openjdk-i386 when it comes to
running java applets.

[stychokiller]

Hmm, poking around in .java/deployment/deployment.properties resulted in this:

The java tester on www.java.com added this line to the deployment.properties:

deployment.javaws.jre.0.path=/usr/lib/jvm/jdk1.8.0_25.impossibleToUse/jre/bin/java

Note that I changed jdk1.8.0_25 to jdk1.8.0_25.impossibleToUse, due to frustration!
Also, this has not resulted in Konqueror running the java test applet, just Firefox (V33.0)

[stychokiller]

Here's what I'm trying to fix: jmol applets, used by http://www.sagemath.org/index.html,
to interact with mathematical objects graphed by the sage program(s):
jmol, by itself, opens a console but the notebook() page(s) in Firefox cannot use the jmol applet, as shown in the attached screenshot of jconsole output. I fail to understand why java "thinks" that applets residing on my PC somehow poses a security risk. sage has a problem in that their documentation does not show where jmol applets should be placed in the file system. Java has a huge documentation hole in that it does not explain how to fix the kinds of problems I'm having.

Let's not even get started on the miles-behind documentation for KDE and Konqueror. A lot of this flailing around could be avoided if there weren't so many config files shot-gunned into the Linux file system also.