Oracle-Sun Java JDK7 How-to Install and Getting-Started on Linux Debian 7 Wheezy Gnome3 32bit Easy Visual-Guide

July 20th, 2012 by Regaz



The Guide Shows You Step-by-Step How-to Install and Getting-Started with the Latest Oracle-Sun Official Java JDK i586 on Debian Linux 7 Wheezy Gnome3 i386 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 Getting-Started with Java JDK 7 Development and also How-to Install the Java Web-Servers Tomcat7 for Debian Linux.

To Make the Entire Process Easier to Visualize and Retain the Post Includes the Basic Screenshots of the Essentials Steps Involved.

The Content give Focus Only to the Essentials Instructions and Commands to make it Easier to Understand;)

Java on Debian
  1. Download Oracel-Sun Java SE JDK:

    Oracle JDK i586 tar.gz
  2. Find and Double-Click on the tar.gz Archive Java JDK 7 tar.gz Extraction 1
  3. Open a Terminal Window
    (Press “Enter” to Execute Commands) Debian Wheezy Gnome3 Open a Terminal Window
  4. Relocate JDK 7
    su 

    If Got “User is Not in Sudoers file” then Look: Solution

    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.

    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 content 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

    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 Installing the Tomcat7 Server on Debian Linux:

Install Tomcat7 for Debian
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