Installing Sun JRE (Java Run-time Environment ) in Ubuntu

Installing Sun JRE (Java Run-time Environment ) in Ubuntu

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# Steps to install Sun JRE :

1) Download the bin file ( Linux self-extracting ) from here :

http://www.java.com/en/download/linux_manual.jsp

2) make the file executable :

Code:

      chmod u+x <file>

3) Get the root access :

Code:

         sudo -s

( It will prompt for your password )

4) Go to /usr directory :

Code:

          cd /usr

5) Make a directory named java

Code:

          mkdir java

6) Go to the java directory :

Code:

          cd java

7) run the downloaded file with full path :


e.g.

Code:

        /home/user_name/Downloads/jre-6u25-linux-i586.bin

This will install the JRE in your system.

# Additional Steps to install firefox-4.0 plugin

8) Go to firefox plugin directory :

Code:

        cd /usr/lib/firefox-4.0/plugins/

9) Create a link for the plugin :

Code:

       ln -s /usr/java/jre1.6.0_24/lib/i386/libnpjp2.so

10) For confirming the installation of plugin, close all firefox windows and re-open it .

Type in :

       about:plugins

in the awesome bar ( as firefox calls it ) and pressing enter key .

11) You can also confirm the installation of java plugin by the following link :

http://www.java.com/en/download/help/testvm.xml


Courtesy : http://www.java.com/en/download/help/linux_install.xml

Also available at : http://ubuntuforums.org/showthread.php?t=1764374