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How do I get the SUN Java plugin to work in Firefox 8.0 or Seamonkey 2.6?

dieter.issler
dieter.issler
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After a recent automatic upgrade of Firefox on my Xubuntu 11.04 system, the SUN Java plugin is no longer recognized by Firefox. I tried the old method of manually symlinking the corresponding library to /usr/lib/mozilla/plugins and various other directories that contained plugins, but to no avail. Other plugins like Flash work fine. Having the SUN Java plugin working is a must for me in order to be able to access my online bank, the Citrix server at my workplace, etc.

After a recent automatic upgrade of Firefox on my Xubuntu 11.04 system, the SUN Java plugin is no longer recognized by Firefox. I tried the old method of manually symlinking the corresponding library to /usr/lib/mozilla/plugins and various other directories that contained plugins, but to no avail. Other plugins like Flash work fine. Having the SUN Java plugin working is a must for me in order to be able to access my online bank, the Citrix server at my workplace, etc.

Valitud lahendus

Try to create a plugins folder in the Firefox Profile Folder and place a symlink to the JP2 Java plugin file (libnpjp2.so) in that folder.

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Open Containing Folder
Loe vastust kontekstis 👍 2

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Valitud lahendus

Try to create a plugins folder in the Firefox Profile Folder and place a symlink to the JP2 Java plugin file (libnpjp2.so) in that folder.

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Open Containing Folder
Vivek
Vivek
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Also, Exit Firefox and rename the pluginreg.dat in your profile folder and start Firefox again. This may help to reinitialize the plugins that Firefox recognizes.

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Useful links:

All about Tools > Options

Going beyond Tools > Options - about:config

about:config Entries

Page Info Tools (Alt + T) > Page Info, Right-click > View Page Info

Keyboard Shortcuts

Viewing Video without Plugins

Firefox Profile Folder & Files

Firefox Commands

Basic Troubleshooting

After Upgrading

Safe Mode

Problematic Extensions

Troubleshooting Extensions and Themes

Troubleshooting Plugins

Testing Plugins

Muudetud Vivek poolt

dieter.issler
dieter.issler Küsimuse esitaja
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cor-el and Vivek.Wilfred,

Thank you very much for your swift replies! In the end, I managed to solve my problem for all users of my computer at once by creating a symbolic link in the directory /usr/lib/firefox-addons/plugins to the file /usr/lib/jvm/java-6-sun/jre/lib/i386/libnpjp2.so. the two important points were (1) to use libnpjp2.so instead of the file libjavaplugin_oji.so, as indicated on http://plugindoc.mozdev.org, and (2) to put this into /usr/lib/firefox-addons/plugins.