To install the Java plugin, First install Java using rpm.This procedure only works with the version you download from Oracle; it will not work with the OpenJDK version of Java you’ll have when using the "yum install java" command.
Step 1:
Download Java rpm package for 32-bit O/S or 64-bit O/S using this link
before installation, close the firefox browser
Change directory to /usr/java. If it isn’t created, create it.
[root@mini ~]# mkdir /usr/java
[root@mini ~]# cd /usr/java
Step 2 :
Install java package using rpm
32-bit O/S :
[root@mini java]# rpm -ivh /home/Downloads/jre-7u45-linux-i586.rpm
64-bit O/S :
[root@mini java]# rpm -ivh /home/Downloads/jre-7u45-linux-x64.rpm
After installation is complete, check java
[root@mail java]# java -version
java version "1.7.0_25"
OpenJDK Runtime Environment (rhel-2.3.10.4.el6_4-x86_64)
OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)
After you have installed Java, then you must install the plugin by creating a symbolic link from the java plugin library to the mozilla plugins directory:
Step 3 :
Find the Firefox Plugin(which gets installed with java) in /usr/java/ directory
[root@mail java]# find /usr/java/ -name libnpjp*
/usr/java/jre1.7.0_45/lib/amd64/libnpjp2.so
Change directory for firefox plugins:
#cd where-ever-you-installed-mozilla/plugins/
[root@mail java]# cd /usr/lib64/mozilla/plugins
(In our system mozilla is installed in this folder)
Step 4 :
Create symbolic link to the plugin:
[root@mail plugins]# ln -s /usr/java/jre1.7.0_45/lib/amd64/libnpjp2.so libnpjp2.so
Check the link file type ll command
[root@mail plugins]# ll
total 360
lrwxrwxrwx 1 root root 41 Dec 21 11:03 libflashplayer.so -> /usr/lib64/flash-plugin/libflashplayer.so
lrwxrwxrwx 1 root root 43 Jan 4 2009 libnpjp.so -> /usr/java/jre1.7.0_45/lib/amd64/libnpjp2.so
-rwxr-xr-x. 1 root root 99080 Nov 12 2010 libtotem-cone-plugin.so
-rwxr-xr-x. 1 root root 106888 Nov 12 2010 libtotem-gmp-plugin.so
-rwxr-xr-x. 1 root root 70904 Nov 12 2010 libtotem-mully-plugin.so
-rwxr-xr-x. 1 root root 79720 Nov 12 2010 libtotem-narrowspace-plugin.so
Open Firefox and goto Tools->Addons->plugins. Now yow can see Java Plug-in enabled..
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