Java configuration console

English Applications
1

Using KDE and Firefox

I’m trying to install a program.
It should be downloaded and installed with java.
I am using a proper Java version, there is no problem of old Java versions.
After the download of the program the java refuses to install, showing a message saying that there is no security.
When this happens on Windows machines, just open the Java configuration console and register the site from where the file is being downloaded.
I was informed that the solution for Linux is to do the same thing, and to open such a configuration console should open a terminal, access the folder with the Java installation and type

 ./ControlPanel

But nothing happens.

Maybe I have not found the correct Java directory … I found the directory below …

 
/usr/lib64/jvm-exports/java-1.8.0-openjdk-1.8.0

Please tell me if this is the right directory.
How do I solve the problem?

Thanks in advance

2

Please do not apply Windows methods on linux, not even with java apps.

Can you show us actual output of your attempts to get the program running ? Copy and paste the output here, between CODE tags, the # in the layout ribbon.

3

When running the Java application, I used the “-nocurity” option but it also did not work.
This application downloads and installs a Brazilian government program to issue invoices for commercial use.
Apparently the program works well until the moment it tries to install the Government program … and then the error occurs … and the window below appears …http://eusoft.com.br/javaError.png

And this is what is returned after the error:



positivo:/home/sergio/Downloads/emissoNfe/sebrae # javaws emissorNFehomologacao.jnlp
Unable to use Firefox's proxy settings. Using "DIRECT" as proxy type.
netx: Initialization Error: Could not initialize application. (Fatal: Application Error: Cannot grant permissions to unsigned jars. Application requested security permissions, but jars are not signed.)
net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not initialize application. The application has not been initialized, for more information execute javaws from the command line.
        at net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:813)
        at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:532)
        at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:936)
Caused by: net.sourceforge.jnlp.LaunchException: Fatal: Application Error: Cannot grant permissions to unsigned jars. Application requested security permissions, but jars are not signed.
        at net.sourceforge.jnlp.runtime.JNLPClassLoader$SecurityDelegateImpl.getClassLoaderSecurity(JNLPClassLoader.java:2393)
        at net.sourceforge.jnlp.runtime.JNLPClassLoader.setSecurity(JNLPClassLoader.java:321)
        at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeResources(JNLPClassLoader.java:734)
        at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:285)
        at net.sourceforge.jnlp.runtime.JNLPClassLoader.createInstance(JNLPClassLoader.java:357)
        at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:429)
        at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:403)
        at net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:805)
        ... 2 more
4

to be sure, is it: -nocurity or -nosecurity

5

Sorry, I typed it wrong here, but I made it right in the attempts and nothing worked

6

In addition:

I used a simpler browser, the Konqueror that comes with the distro OpenSuse

This time the installation went a little further, gave the same error, but clarified a little more by presenting the window below:http://www.eusoft.com.br/javaErr.png

When I click on “More Information” I’m directed to an Oracle page that shows the problem for the Windows and Mac platforms

Summary of the opera … we are without any help …

Can you tell me how to solve it?

7

Finally I was able to find the Java configuration window installed with the OpenSuse repositories

Probably this solution is also suitable for other distros

I removed everything that refers to java that was installed via OpenSuse distribution

I installed the latest version of Java as instructed directly from Oracle

After many hours, I found the file that opens the java configuration console … Below is the link

/usr/java/jre1.8.0_161/sun_java.desktop

Now just make the settings …

I hope it passes to OpenSuse users

8

Double-posting is generally discouraged in these Forums…

To assist future people who might run into this issue about running unsigned applets,

Although you can install Oracle Java which includes a tool which can modify security,

With openjdk, the console is a lot less capable,
To address this issue about unsigned applets, you can follow follow the steps described in this post

https://forums.opensuse.org/showthread.php/530675-OpenJDK-1-8-0-Policy-Tool-don-t-exists?p=2863006#post2863006

TSU