How-to Install Oracle JDK 8 on Lubuntu 12.04 Precise LTS 32/64bit Easy Guide

March 20th, 2014 by thelinuxevangelist

Install Oracle JDK 8 on Lubuntu 12.04 Precise i386/amd64




The Guide Shows You in Easy-Steps How-to Install and Getting-Started with the Latest Oracle-Sun Official Java SE JDK 8 i586/x8664 for Lubuntu Linux 12.04 Precise Pangolin LTS 32/64bit Desktop.

To SetUp Oracle JDK you will need to Use the update-alternatives Tool to Update your System Java to 1.8 JDK8.

The Powerful Java 8 New Features:

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

To the How-to Install Oracle JDK 8 on Lubuntu 12.04 Precise Bottom there is a Link for Quick Getting-Started with Java JDK 8 Development and also to Install the Java Web-Server Tomcat 7 for Lubuntu Linux.

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

The Content and Details of How-to Install Oracle JDK 8 on Lubuntu 12.04 Precise are Expressly Reduced to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

Install Oracle JDK 8 on Lubuntu 12.04 Precise - Featured
  1. Download Oracle Java SE JDK8 for Linux:

    Oracle JDK8 i586/x8664 tar.gz
  2. Open Terminal Window
    (Press “Enter” to Execute Commands)

    Ctrl+Alt+t
    Install Oracle JDK 8 on Lubuntu 12.04 Precise - Open Terminal

  3. Double-Click on the JDK8 tar.gz Archive and Extract into
    /tmp

    Install Oracle JDK 8 on Lubuntu 12.04 Precise - Java JDK 8 tar.gz Extraction Path

    Or from Shell:

    tar xvfz ~/Downloads/jdk-8*.tar.gz -C /tmp/
  4. Relocate Java JDK 8
    sudo su

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

    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 content with

    mv /tmp/jdk1.8* /usr/lib/jvm/
    
  5. Installing Oracle Java JDK8

    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]

    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 with Java 8 Support on Lubuntu

    Eclipse with JDK8 Support
  9. Now Thanks to Oracle-Sun Corporation You are Able to Successfully Start Up with Java 8 Development.

    Welcome to Java 8 Challenge! ;)

    Install Latest IntelliJ IDEA for Java & Android on Linux Lubuntu

    Installing IntelliJ on Lubuntu
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