See JDK 7 and JRE 7 Installation Guide for general information about installing JDK 7 and JRE 7.
When you install the Java platform, the Java plugin file is
included as part of that install. If you want to use Java within
Firefox, you need to manually create a symbolic link from the
plugin file in the release to one of the locations that Firefox
expects. To make the plugin available to all users, create the link
inside of the Firefox application's directory, in the
plugins subdirectory. Alternatively, you can create
the symbolic link in your home directory, in
~/.mozilla/plugins. In the remainder of this document,
the text, "Firefox
directory", implies either of these locations.
Note: For Firefox version 21 and higher, you must create the symbolic link in your home directory,
~/.mozilla/plugins. Beginning with Firefox version 21, creating the symbolic link in the
plugins subdirectory of the Firefox application's directory is not supported.
This release provides the Next-Generation Java plugin. If you have been using the classic plugin, see the Notes for further information.
The locaton of the plugin file for Linux varies according to the chip architecture of the underlying platform.
|Chip Architecture||Location of File|
If you are using a 32-bit Firefox, you should use the 32-bit
Java Plugin (from the
lib/i386 directory). To
determine which version of Firefox you are running, launch the
application, and select the menu item Help -> About
Mozilla Firefox. At the bottom of the window is a version
string line that contains either "Linux i686" (32-bit) or
"Linux x86_64" (64-bit).
To install the Java Plugin follow these steps:
1. Exit Firefox.
2. Uninstall any previous installations of Java Plugin.
Only one Java Plugin can be used at a time. When you want to use a different plugin, or version of a plugin, remove the symbolic links to any other versions and create a fresh symbolic link to the new one.
Remove the symbolic links (or move them to another directory) to
3. Create a symbolic link to the Java
Plugin in the Firefox
Create a symbolic link to the Java Plugin
libnpjp2.so file in the Firefox
directory. For a 32-bit Plugin:
cd <Firefox>/plugins ln -s <JRE>/lib/i386/libnpjp2.so .
For a 64-bit Plugin:
cd <Firefox>/plugins ln -s <JRE>/lib/amd64/libnpjp2.so .
4. Start the Firefox browser.
Type about:plugins in the Location bar to confirm that the Java Plugin is loaded. You can also click the Tools menu to confirm that Java Console is there.
This file should no longer be used and all symbolic links to it should be removed.