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

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.

1. Here Download Oracle Java SE JDK 7:

   JDK 7 i586.tar.gz
   Link to Download the Latest JDK Release

2. Double-Click on the tar.gz Archive and Extract into /tmp
   

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

4. Relocate JDK 7

   Copy

   sudo su

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

   Copy

   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.

   Copy

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

   Reiterate the Execution Permission over the Java binaries

   Copy

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

   Finally, Shift the Java contents with

   Copy

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

5. Installing Oracle Java JDK 7

   Copy

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

   Copy

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

   Copy

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

   Copy

   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.

   Copy

   update-alternatives --config java

   And for the Java Compiler instead:

   Copy

   sudo update-alternatives --config javac

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

6. Optionally Set Java Environment Variable.

   Copy

   su <myUser>

   Copy

   nano $HOME/.bashrc

   Append:

   Copy

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

   Ctrl+x to Save & Exit from nano :)

   Copy

   source $HOME/.bashrc

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

   Here Install Oracle Java Firefox PlugIn

   How to Install Oracle Java JDK Firefox Plugin

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