How to Install Oracle JDK 8 on Ubuntu 12.04 Precise LTS Linux Easy Guide

Install Oracle JDK 8 on Ubuntu 12.04 Precise i386/amd64

The Guide shows you in Easy-Steps How to Install Oracle-Sun Java SE JDK 8 i586/x8664 for Ubuntu 12.04 Precise Pangolin LTS Desktop/Server.

To SetUp Oracle JDK in you may need to make use of the update-alternatives Tool to Update your System Java.

Some Java 8 Features:

• LAMBDA Expressions Programming
• The Stream API
• The Nashorn Javascript Engine

To the How to Install Oracle JDK 8 in Ubuntu 12.04 Precise Bottom there is a Link for Quick Start with Java JDK 8 Development and also to Install the Java Web-Server Tomcat 7 for Ubuntu.

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 Install Oracle JDK 8 in Ubuntu 12.04 Precise are Expressly Minimal to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

1. Download Oracle Java SE JDK8 for Linux.

   Oracle JDK8 i586/x8664 tar.gz

   Oracle Jdk8

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

   tar xvzf ~/Downloads/jdk-8*.tar.gz -C /tmp/

   
   Or from Shell:

   tar xvfz jdk1.8*.tar.gz -C /tmp/

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

4. Relocate JDK 8

   sudo su

   If Got “User is Not in Sudoers file” then see: How to Enable sudo
   Make a jvm Directory if Not already there with

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

   Set the root superUser as owner

   sudo chown -R root:root /tmp/jdk1.8*

   Reiterate the Execution Permission over the Java binaries

   chmod -R +x /tmp/jdk1.8*/bin

   Finally, Shift the Java contents with

   mv /tmp/jdk1.8* /usr/lib/jvm/
   

5. Installing Oracle Java JDK 8
   You can directly Copy & Paste the Commands into Terminal..

   update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.8*/bin/java 1065
   

   update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.8*/bin/javac 1065
   

   update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk1.8*/bin/jar 1065
   

   update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk1.8*/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 on First, Column. :)

   Lastly to Exit from the Super-User session:

   exit

6. Setting JAVA_HOME User Environment Variable (Optional).

   su [myUserName]

   Or simply:

   exit

   su [myUserName]

   Or simply:

   exit

   And Edit the Bash environment Configuration file

   nano $HOME/.bashrc

   Append:

   export JAVA_HOME=/usr/lib/jvm/jdk1.8[uX]

   Replace the [uX] Looking for the Installed Java 8 Version with:

   ls /usr/lib/jvm/

   Ctr+x to Save & Exit from nano Editor :)
   Load New Bash Config:

   bash

7. Test New Java JDK 8 Installation.

   java -version

8. How to Install Eclipse Java on Ubuntu

   Eclipse Java IDE Install

   Install Eclipse for Java

9. How to Install Netbeans 8 IDE for Java on Ubuntu

   Install Netbeans 8 Java for Ubuntu

   Setup NetBeans Java for Linux

Now Thanks to Oracle-Sun Corporation you are able to Successfully Start Up with Java 8 Development.

Welcome to Java 8 Challenge! ;)