Upgrading Sun-Java on Ubuntu 10.04

It is always good from a security point of view to have all your systems up and running in the most current state.  Go to this particular URL

https://browsercheck.qualys.com/

Scan your browser by clicking on the check box.  There Qualys will tell you if there is any upgrade which is available.

Next go to this website

http://www.java.com/en/download/linux_manual.jsp?locale=en

Linux (self-extracting file) filesize: 20.7 MB     - for 32 bit systems
Linux x64 * filesize: 20.3 MB                            - for 64 bit systems



Next move become root on a terminal by executing

$sudo su

Copy the binary over to the destination shown below

#cp /home/bala/Downloads/jre-6u30-linux-x64.bin /usr/lib/jvm/

#cd /usr/lib/jvm

Now make that file as executable

#chmod +x jre-6u30-linux-x64.bin

Now run that executable

#./jre-6u30-linux-x64.bin

Move the old soft link file which pointed to the old java

#mv java-6-sun java-6-sun_old

Remove the bin file.

#rm jre-6u30-linux-x64.bin

Rename the extracted file.

#mv jre1.6.0_30/ java-6-sun-1.6.0.30

Create a new link to your extracted Java

#ln -s java-6-sun-1.6.0.30 java-6-sun

Now rename the old java plugin.

#mv /etc/alternatives/mozilla-javaplugin.so /etc/alternatives/mozilla-javaplugin.so_old

Now create a new soft link to you new java

#ln -s /usr/lib/jvm/java-6-sun/lib/amd64/libnpjp2.so /etc/alternatives/mozilla-javaplugin.so

# ll /usr/lib/mozilla/plugins/libjavaplugin.so

lrwxrwxrwx 1 root root 39 2010-09-19 09:11 /usr/lib/mozilla/plugins/libjavaplugin.so -> /etc/alternatives/mozilla-javaplugin.so*

# ll /etc/alternatives/mozilla-javaplugin.so

lrwxrwxrwx 1 root root 45 2011-12-19 20:42 /etc/alternatives/mozilla-javaplugin.so -> /usr/lib/jvm/java-6-sun/lib/amd64/libnpjp2.so*

# ll /usr/lib/mozilla/plugins/libjavaplugin.so

lrwxrwxrwx 1 root root       39 2010-09-19 09:11 libjavaplugin.so -> /etc/alternatives/mozilla-javaplugin.so*

http://java.com/en/download/installed.jsp?jre_version=1.6.0_30&vendor=Sun+Microsystems+Inc.&os=Linux&os_version=2.6.32-36-generic

If you have Newer version of firefox via ppa then one more step.

#ln -s /usr/lib/jvm/java-6-sun/lib/amd64/libnpjp2.so /usr/lib/firefox-10.0.1/plugins/libjavaplugin.so