This tutorial is going to show you how to Install Oracle Java 7 Update 9 on Kubuntu 12.10. Java is a must have application for Linux users. Enrich your browsing activity with Oracle Java 7 update 9. If you still use the older version of Oracle Java, I recommend you to upgrade to this new release.
Steps to install Oracle Java 7 on Kubuntu 12.10
1. Download Oracle Java 7 update 9 for Linux. For more options for downloading Java, please visit this page: http://java.com/en/download/manual.jsp#lin
2. Extract the package we’ve just downloaded
tar xzvf jre-7u9-linux-i586.gz
It will produces a new directory
jre1.7.0_09
Now move the new directory to /usr/java. You will need to create the directory if it not exist.
su
mkdir /usr/java
mv jre1.7.0_09
Now use these command to create symlink to the java binary.
cd /usr/java/jre1.7.0_09/bin
ln –s /usr/java/jre1.7.0_09/bin/java /usr/bin/java
At this point, Java 1.7.9 update 9 is installed. You can check by invoking this command
java –version
and it will looks like this
java version "1.7.0_09"
Java(TM) SE Runtime Environment (build 1.7.0_09-b05)
Java HotSpot(TM) Client VM (build 23.5-b02, mixed mode)
Now we need to enable the Java plugin on web browser such as Firefox or Google Chrome.
cd /home/dhani/.mozilla/plugins
Create first if you don’t have it
mkdir /home/dhani/.mozilla/plugins
Now create symlink to libnpjp2.so on /home/dhani/.mozilla/plugins directory
ln –s /usr/java/jre1.7.0_09/lib/i386/libnpjp2.so
Don’t forget to change “dhani” with your current username. Now check if Java is integrated with Firefox. Open Firefox and type “about:plugins”
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