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Java Runtime Environment (JRE6) for Ubuntu JRE


The Java Runtime Environment(JRE) enables your computer to run applications and applets that use Java technology. Without it some web pages would not be completely downloaded. In Ubuntu JRE, and the JRE plugin for Firefox have to be installed personally. Unfortunately Debian based systems have to use an alternative method because Sun Microsystems provides only RPM and Binary packages.
Control if your multiverse repositories are enabled. If not enable them and from the command line type or copy and paste this command;
sudo apt-get install sun-java6-jre sun-java6-plugin sun-java6-fonts – This command permits you to install JRE version 6 with its relative plug-ins for Firefox. Now follow screen instructions.

Verify the JRE version just installed by typing, java  -version on the command-line

Next open Firefox and type about: plugins in the address bar and check out for Java plugins or take a test from the Sun Microsystems Verify Page.

[Update 1] Same method for your Ubuntu 9.04
[Update 2] For your Ubuntu 9.10 ‘Karmic’ follow the procedure above – – just copy and paste to get the job done.
[Update 3] How to Install Java Runtime Environment JRE7 In Ubuntu


  1. Efrem
    6:24 pm on August 25th, 2007

    Thanks for the info…

  2. zye
    8:36 pm on August 25th, 2007

    A good one, have been trying to get JRE installed but to no avail. Thanks

  3. Stiga
    2:12 pm on August 26th, 2007

    Good blog, like your design. Excellent content. Keep blogging

  4. Manfi
    2:11 am on August 28th, 2007

    Just installed JRE6. Thx for the tip

  5. resmo
    9:33 am on August 29th, 2007

    if you installed 2 or more versions of java like java 1.4, java 5 and java 6. use
    sudo update-alternatives – -config java
    to choose which version you want as default java.

  6. nhotz
    9:50 am on December 9th, 2008

    may i ask somebody to teach me how to make a jar file.plz send me in my email.thanks.