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Oracle Java JDK7 I586 How to Install and Getting Started on Linux Xubuntu 12.04 Precise I386 Easy Visual-Guide

September 2, 2012 | By Duchateaux.

Hi! The Tutorial shows you Step-by-Step How to Install Oracle-Sun Java JDK 7 i586 for Linux Xubuntu 12.04 Precise Xfce 32-bit Desktop.

After Installing you will need to Use the update-alternatives Command Tool to Update your System Java to Oracle Java 1.7 JDK.

To the Article Bottom there is a Link for Quick Start with Java JDK 7 Development and also How to Install the Java Web-Servers Tomcat7 for Linux Xubuntu.

And this Visual Guide includes the Basic Screenshots of All GUI Steps involved.

The Content give Focus Only to the Essentials Instructions and Commands to make it Easier to Follow.

Java On Ubuntu

  1. Download Oracle Java SE JDK 7:

    JDK 7 i586.tar.gz

  2. Double-Click on the tar.gz Archive and Extract into /tmp
    Java JDK 7 tar.gz Extraction Path

  3. Open a Terminal Window
    (Press “Enter” to Execute Commands) Debian Open a Root Terminal Window

  4. Relocate JDK 7

    sudo su

    If Got “User is Not in Sudoers file” then see: How to Enable sudo

    if [ ! -d "/usr/lib/jvm" ]; then mkdir /usr/lib/jvm; fi

    The above command is used to create a jvm directory if not already there.

    sudo chown -R root:root /tmp/jdk1.7*

    Reiterate the Execution Permission over the Java binaries

    chmod -R +x /tmp/jdk1.7*/bin

    Finally, Shift the Java contents with

    mv /tmp/jdk1.7* /usr/lib/jvm/

  5. Installing Oracle Java JDK 7

    update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7*/bin/java 1065
    update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7*/bin/javac 1065
    update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk1.7*/bin/jar 1065
    update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk1.7*/bin/javaws 1065

    Checking or Setting the System Java Version in Use with.

    update-alternatives --config java

    And for the Java Compiler instead:

    sudo update-alternatives --config javac

    To Switch of Java Version Just Enter the Reference Number on First, Column. :)

  6. Optionally Set Java Environment Variable.

    su <myUser>
    nano $HOME/.bashrc

    Append:

    export JAVA_HOME=/usr/lib/jvm/jdk1.<X.Y_uZ>

    Ctrl+x to Save & Exit from nano :)

    source $HOME/.bashrc

  7. How to Install Oracle Java Browser Plug-In:

    Install Oracle Java Firefox PlugIn

Guides to Install the Tomcat 7 Java Server on Linux Xubuntu:

Install Tomcat7 for Xubuntu