How to Install Oracle JDK 8 on Kubuntu 14.04 Trusty LTS Easy Guide

March 17, 2014 | By the+gnu+linux+evangelist | Filed in: Tutorial.

Install Oracle JDK 8 on Kubuntu 14.04 Trusty i386/amd64

The Guide shows you in Easy-Steps How to Install Oracle-Sun Java SE JDK 8 i586/x8664 for Kubuntu Linux 14.04 Trusty Tahr LTS Desktop.

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 Kubuntu 14.04 Trusty Bottom there is a Link for Quick Start with Java JDK 8 Development and also to Install the Java Web-Server Tomcat 7 for Kubuntu Linux.

Furthermore, 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 Kubuntu 14.04 Trusty are Expressly Minimal to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

Install Oracle JDK 8 on Kubuntu 14.04 Trusty - Featured
  1. Download Oracle Java SE JDK8 for Linux.

    Oracle JDK8 i586/x8664 tar.gz
  2. Double-Click on the JDK8 tar.gz Archive and Extract into
    /tmp
    .

    Install Oracle JDK 8 on Kubuntu 14.04 Trusty - Java JDK 8 tar.gz Extraction Path
    Or from Shell:

    tar xvfz ~/Downloads/jdk-8*.tar.gz -C /tmp/
  3. Open Terminal Window
    (Press “Enter” to Execute Commands).

    Cmd+Alt+t and Search for “term”

    Install Oracle JDK 8 on Kubuntu 14.04 Trusty - Open Terminal
  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 Kubuntu

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

    Welcome to Java 8 Challenge! ;)

    Install the Latest IntelliJ IDEA for Java & Android on Kubuntu

    Installing IntelliJ on Kubuntu

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