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don.ghn Author

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Hi all,

I'm not sure if it is the right forum to ask these questions.

I need to run an application using JRE 6 on mac osx(Lion). I have installed java 6 by the steps in:

http://support.apple.com/kb/HT5559?viewlocale=sv_SE

The problem is that this update also removes the Java Preferences application from the Utilities menu. As well as, when I try to run my jnlp file there is an error which "To open this Web Start application, you need to download the Java Runtime Environment."

How can I set Runtime Parameters for example if I cannot access to the Java Preferences? how to add Applet Runtime Parameters?

Thanks in advance

Mac Pro, Mac OS X (10.7.5)

Posted on Mar 10, 2013 3:15 PM

23 replies

Mar 13, 2013 4:05 PM in response to don.ghn

If you successfully installed the Java updater from Apple, you have Java 6 runtime.

Confirmation of which Java runtime version you have installed can be had by launching the terminal and entering (or copy and paste):

java -version

When you hit the "enter" key it will return something like:

java version "1.6.0_43"

This is Java 6 runtime (the second digit is the main version indicator, don't ask me why. it just is.)

Your issue is that you cannot enable java in your browser without a Java preferences tool.

Your answer is to install the Java 7 plugin from Oracle. That installs a Java preferences System Preferences pane.

You should know that Oracle has declared Java 6 is "End of life". There will not be any further development of the Java 6 runtime, so you should move along.

don.ghn Author

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Mar 14, 2013 4:24 AM in response to Michael Wineke

I found out that java version "1.6.0_43"

so you mean that there is no way to install JRE on (10.7.2) beacause as you mention java 7 is for 10.7.3 and later?

because the computer is for my university and I am not allowed to update its OS =(

Mar 14, 2013 8:36 AM in response to don.ghn

Are you a student?

Is this a lab machine?

Contact your Lab admin and request they perform all OS updates (and application updates for that matter) on the machines. It's somewhat rediculous to be stuck at 10.7.2 at this point in time. Are they hiring? 😉

don.ghn Author

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Mar 14, 2013 9:17 AM in response to Michael Wineke

Yes I am doing my master thesis. it is a Netbeans project and is based on the Java programming language and OpenGL libraries(JOGL). it will be used for an internet course therefore it has to be run on all operating systems even on 10.7.2 too =( then I have to find a solution.

Mar 14, 2013 10:58 AM in response to don.ghn

You could locate a machine that has the Apple Java Preferences.app (in /Applications/Utilities/ ) and copy it to the 10.7.2 machine, but you will probably have to revert the plugin configuration.

There are instructions available for that, but you'll need to do some searching on line. Doing a search on this support site for "java disabled" would be a good start.

In reality, most OS X machines running 10.7 and above that have internet access are going to have the Java 6 plugin disabled.

I'm not sure what good it would do to assure it runs with the java 6 plugin on OS X 10.7 if most of the users are going to have had the plugin disabled anyway. Using the java 6 plugin in OS X 10.7+ is unsupported by Apple, and requiring users to roll back isn't realistic.

10.7+ users should just update their 10.7 software so they can run the Java 7 plugin.

Doing otherwise would really just be irresponsible, considering the significance of the vulnerabilities.

Every developer is going to need to write to vendor supported configurations. If that can't be done, then someone is in the wrong business. /soapbox

don.ghn Author

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Mar 14, 2013 2:23 PM in response to Michael Wineke

you mean that my program needs java 6 plugin beacause as I mentioned beforeI installed Java 7 on OS x 10.7.3, 10.7.5 and 10.8.2 at first, then I tried to run my JWS applications (which use JOGL1 ) but they showed only blank white pages then I enable Java 6 according to the link:

http://support.apple.com/kb/HT5559?viewlocale=sv_SE

after that they warned that there is no JRE , I installed Java7 again and they work.

Actually this is my first time which I am programming in Java and Ican not understand how they are related to eaach other but I have to explain it in my erport. why is different between the java 6 plugin and 7? why my program needs both? doing the steps in the mentioned link does not harm to mac systems?

Mar 14, 2013 3:19 PM in response to don.ghn

There are two primary functional components to Java.

Java Runtime

Java Plugin

Apple merely disabled the Java 6 plugin, leaving the Java 6 Runtime installed and operational.

Installation of the Java 7 Plugin is the recommended and supported solution for OS X 10.7+.

The linked instructions restore the Java 6 plugin. It should work fine after that (if you ignore the proven vulnerabilities that prompted Apple to disable it).

The Java Runtime can run Java programs, but if you need a GUI user interface, you commonly use the plugin's functionality. At least that is my understanding...

don.ghn Author

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Mar 15, 2013 9:08 AM in response to Michael Wineke

How Apple make Java complicated 😉

One more question, what is the main role of Java 6 plugin because after enabling that (mentioned steps) and installing Java 7, my JWS works?!?!?! I mean that Java 7 make them work or Java 6?

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