Install the Latest JRE

[root@localhost Downloads]# rpm -ivh jre-8u131-linux-x64.rpm
Preparing...                ########################################### [100%]
   1:jre1.8.0_131           ########################################### [100%]
Unpacking JAR files...
    plugin.jar...
    javaws.jar...
    deploy.jar...
    rt.jar...
    jsse.jar...
    charsets.jar...
    localedata.jar..


Create the link to the plugins

[root@localhost plugins]# pwd
/usr/lib64/mozilla/plugins

[root@localhost plugins]# ln -s /usr/java/jre1.8.0_131/lib/amd64/libnpjp2.so libnpjp2.so
[root@localhost plugins]# ls -lrt
total 0
lrwxrwxrwx. 1 root root 41 Mar 29 14:24 libflashplayer.so -> /usr/lib64/flash-plugin/libflashplayer.so
lrwxrwxrwx. 1 root root 44 Apr 19 12:04 libnpjp2.so -> /usr/java/jre1.8.0_131/lib/amd64/libnpjp2.so

Restart firefox