How to Install Oracle JDK 7 on LXLE 12.04 LTS I386/amd64 Linux Easy Guide

Install Oracle JDK 7 on LXLE 12.04 LTS

The Guide shows you in Step-by-Step How to Install and Getting-Started with the Oracle-Sun Official Java SE JDK 7 for LXLE 12.04 LTS Salamander 32/64-bit Linux Desktop.

To SetUp Oracle JDK you will need to Use the update-alternatives Tool to Update your System Java to 1.7 JDK.

To the How to Download and Install Oracle JDK 8+ on LXLE 12.04 LTS Bottom there is a Link for Quick Start with Java JDK 7 Development and also to Install Eclipse IDE for Java Development on LXLE Linux.

Moreover, to Make the Process Easier to Visualize the Post Includes the Basic Screenshots of the Steps Involved.

The Contents and Details of How to Download and Install Oracle JDK 8+ on LXLE 12.04 are Expressly Essentials to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

1. Download Oracle Java SE JDK for Linux:

   Oracle JDK i586/x8664 tar.gz

   Select Oracle JDK 7 for Linux

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

   

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

   Ctrl+Alt+T

   

   In case first see: Terminal QuickStart Guide.

4. Relocate JDK 7

   sudo su

   If Got “User is Not in Sudoers file” then see: How to Enable sudo
   To Make a jvm Directory Only if Not already there
   (You can directly copy & paste the commands into the terminal)

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

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

   Then to shift the Oracle JDK 7 contents

   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 Selection Number/non First, Column. :)

6. Getting-Started.

   Getting-Started Quickly with JDK

   How-to
   Getting-Started Quickly with Java JDK Development

Now Thanks to Oracle-Sun Corporation
you are able to Successfully Start with Java JDK Use & Development.

How to Install Eclipse for Java SE on LXLE

Install Eclipse Java LXLE
The Linked Guide Includes Tutorials for Installing Latest Eclipse for Java Developers on Linux LXLE Distro