Comments on: Install Java 6 Update 10 on Ubuntu 8.04

By: Russel Ewelike

Russel Ewelike — Sat, 01 Oct 2011 10:24:02 +0000

Iím not that much of a online reader to be honest but your sites really nice, keep it up! I’ll go ahead and bookmark your site to come back down the road. Many thanks

By: Conner Sweeney

Conner Sweeney — Mon, 20 Sep 2010 05:13:29 +0000

Hello,
I would like to thank you for the perl script, it was incredibly useful in allowing me to install an older version of Java and generate the needed jinfo file. Many thanks for your help.

By: Thasso

Thasso — Thu, 05 Feb 2009 19:19:45 +0000

Raimon,

I am not eaxtly sure and I don’t have a Ubuntu system at hand right now, but as far as I remember:

For the plugin, you have to remove the old and ass sysmlinks to the new plugin in /usr/lib/firefox. See

http://java.sun.com/javase/6/webnotes/install/jre/manual-plugin-install-linux.html

for detailed instructions from sun. I think they assume that you have the stuff installed in your home directory, but I think you can easily adopt that to /usr/lib/firefox.

I am not sure about JavaWebstart. I would change anything except for the file association with .jnlp. Just tell your browser to start with the javaws binary from the java version you want to use. This should be enough to get things started with the right webstart version.

sorry, but I can not give you any more details right now, because I currently do not have access to a Ubuntu machine.

cheers,

Thasso

By: Raimon

Raimon — Thu, 05 Feb 2009 02:46:36 +0000

I meant “manually install”

Sorry,

By: Raimon

Raimon — Thu, 05 Feb 2009 02:45:18 +0000

How did you manually Java plugin and Web Start on Firefox 3?

Thanks

By: Lana

Lana — Wed, 29 Oct 2008 17:48:28 +0000

Good post.

By: Thasso

Thasso — Mon, 13 Oct 2008 22:27:04 +0000

Yes, you are right. Switching the java plugin instantly (or least with a firefox restart) would be really nice. When I find the time, I will try to integrate that and the fixing the links to the man pages.

cheers

By: Jonathan Busby

Jonathan Busby — Sun, 12 Oct 2008 18:25:01 +0000

Regarding manually installing the Java plugin and Web Start in the above message, it occurred to me that one other improvement could be made to the Perl script. Specifically, the new java-6.10-sun alternative needs to have at least 1 *slave* link associated with it that points to the correct man page. It would be even better if the generic Java plugin link — libjavaplugin_oji.so — in usr/lib/firefox as well as the links needed for Java Web Start were also integrated into the alternatives system as slave links to the java-6.10-sun alternative. That way, when one chooses to change JVMs via eg. ‘update-java-alternatives –set’ the browser plugin and man pages are changed as well, in accordance with the chosen JVM.

Just a suggestion.

Jonathan

By: Jonathan Busby

Jonathan Busby — Sun, 12 Oct 2008 16:41:59 +0000

Works perfectly! Other than having to manually install the Java plugin and Java Web Start ( which the Sun install docs say you have to do anyway — at least for Linux ) I did not have to do anything else.

Also, I’ve verified that your solution does indeed fully comply with the Alternatives system as I was able to switch between JVM’s using ‘update-java-alternatives –set’

Thanks a lot for your help and work! It is greatly appreciated.

Jonathan

By: Thasso

Thasso — Fri, 10 Oct 2008 01:15:06 +0000

Jonathan,

you were right, the stupid links were not so stupid after all
I updated the script and the text. As far as I got it know, what I did wrong was the interpretation of the “generic name” (man update-alternatives). I simply used java, but the man page states:

“A name, like /usr/bin/editor, which refers, via the alternatives system, to one of a number of files of similar function.”

I switched to full path generic names, so /usr/bin/java instead of just java. This seems to do the right thing and the links get created appropriately in /usr/bin.
Execute the updated script. It should fix your problem. At least it will “recreate” the links in /usr/bin (I still do not understand why they disappeared – the script does not delete anything and the man page does not say anything about removing existing links ).

Let me know if it helped.

cheers