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Oracle Java JDK 7 32bit How to Install and Getting Started on Linux Ultimate Edition on 3.5 KDE4 I386 Easy Visual-Guide

March 27, 2013 | By Duchateaux.

The Guide shows you Step-by-Step How to Install and Getting-Started with the Oracle-Sun Official Java JDK x64 for Linux Ultimate Edition 3.5 KDE4 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 Ultimate Edition.

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

The Contents and Details of Guide are Expressly Essentials to Give Focus Only to the Essentials Instructions and Commands to Make the Tut Easier to Read & Understand ;)

Java On Ubuntu

  1. Download Oracle Java SE JDK 7:

    Oracle JDK x86.tar.gz

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

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

    Linux Ultimate Edition 3.5 KDE Open Terminal

    In case first see: Terminal QuickStart Guide.

  4. Relocate Oracle JDK

    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 Ultimate Edition:

Install Tomcat7 for Ultimate