Java segurity level

The java is blocking the program execution
How do I change the security level for this lock does not happen?

Thanks in advance

Try ‘jcontrol’ to set settings for Java.

Good luck.

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I finde the solution:

In OpenSuse, we can change the security in the java’s ControlPanel. Open in the path:


Now I installed OpenSuse 13.2 32bit and KDE

See this result when looking for java:

linux-qgry:/home/sergio # java -version
java version "1.7.0_75"
OpenJDK Runtime Environment (IcedTea 2.5.4) (suse-4.1-i386)
OpenJDK Server VM (build 24.75-b04, mixed mode)

See this result when looking for ContrlPanel

linux-qgry:/home/sergio # find / -name ControlPanel
find: ‘/run/user/1000/gvfs’: Permission denied
linux-qgry:/home/sergio # 

Why I can not find the ControlPanel?
How to configure Java?

I haven’t had to set this before, so am not sure but based on some recollection and a Google search…

I remember that awhile back there might not have been an openjdk control panel so would require installing Oracle Java, but a quick search suggests that you should be able to find an Iced Tea Web Control panel (sorry, am not on a machine right now I can check).

Since all of openJDK is based on Iced Tea, hopefully if you can find this control panel it will manage all implementations of Java on your system.

Read this reference from Ubuntu which should apply equally on openSUSE, first try the last suggestion in the following link


It seems to me if the above doesn’t work, you might find it on your system by running the following on your system which installs locate
Install locate and setup

zypper in mlocate && updatedb

Then search, the following should return all instances on your system

locate ControlPanel


Definetively, I do not have “ControlPanel” in my system
My Firefox has the plugin installed IcedTea.
What may be happening?

OpenJDK/IcedTea does not have a “ControlPanel”.
“ControlPanel” only comes with the java from Oracle. You probably had that installed at some point, that’s why you find it in your snapshots.

Not sure if it’s exactly the same, but IcedTea includes “itweb-settings”.

I was trying to decrease the safety of java, because an application is not working, but maybe this way does not solve the problem and I do not need that.

When I try to download an application (java) on a Government website, I get a message that the java is not installed (but is installed).
Trying to solve this, already installed several versions of java and was now trying to decrease the safety of java, but now I think better to abandon this idea and try another

Perhaps the 64-bit OpenSuse solve this problem. I will try this now.

Minor Update to this thread which unfortunately does not resolve the OP’s issue

It seems that openJDK has a “jconsole” which appears to support all the “View” management functions of the Java Control Panel but is missing a number of active management functionality like setting security levels.

This is very cool for anyone who needs to monitor JVM metrics both locally and remotely but unfortunately does little more than that.
This is still very significant for anyone running Java apps under heavy load.


Another minor update to this thread…

I (and probably others) were looking for some kind of openJDK Control Panel, and I was trying to find a command line executable but unsuccessfully.

Apparently, if you have a Desktop installed, you will find the following as Desktop menu items…

  • Iced Tea Web Control Panel… and yes, it has a Security tab with checkboxes where you can decrease default security
  • Iced Tea Web Policy Editor… It looks like with this you can set access (security) settings on specific applets


Right, that’s the “itweb-settings” I mentioned earlier. To start it from the command line, you have to enter “itweb-settings”… :wink:

  • Iced Tea Web Policy Editor… It looks like with this you can set access (security) settings on specific applets

Yes, that’s “policyeditor”.
“policytool” is available as well.

You can also reach both in “itweb-settings”: in “Policy Settings” there’s a button for “Simple editor” (policyeditor) and “Advanced editor” (policytool).