How-to Install Oracle JRE 9 on Linux Elementary OS Easy Guide

May 2nd, 2017 by thelinuxevangelist

Oracle JRE 9 Quick-Start for Elementary OS

Hello Elementary User! This Tutorial Shows You Step-by-Step How-to Install Latest Oracle-Sun Java SE JRE 9 on Elementary OS 32/64-bit GNU/Linux Desktop.

To SetUp Oracle JRE 9 you will need to Use the update-alternatives Tool to Update your System Java to 1.9 JRE9.

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 JRE 9 on Elementary OS are Expressly Minimal to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

Getting-started with Oracle JRE 9 on Elementary OS - Featured
  1. Open a Terminal Shell emulator window
    (Press “Enter” to Execute Commands)

    Installing Oracle JRE 9 on Elementary OS - Loki Pantheon Open Terminal
    Search into Apps.
  2. Download Oracle Java SE JRE 9 for GNU/Linux:

    Oracle JRE 9 i586/x8664 tar.gz
  3. Double-Click on the tar.gz Archive and Extract into /tmp
    Or from Shell:

    tar xvzf ~/Downloads/jre-9*.tar.gz -C /tmp/

    Install Oracle JRE 9 on Elementary OS - Java JRE 9 tar.gz Extraction Path

  4. Relocate Java JRE 9

    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 Owner:

    chown -R root:root /tmp/jre-9

    Reiterate the Execution Permission over the Java binaries:

    chmod -R +x /tmp/jre-9/bin

    Finally Shift the Java content with:

    mv /tmp/jre-9 /usr/lib/jvm/
  5. Installing Oracle Java JRE 9
    You can directly Copy & Paste the Commands into Terminal…

    update-alternatives --install \
    /usr/bin/java java /usr/lib/jvm/jre-9/bin/java 1065
    update-alternatives --install \
    /usr/bin/javaws javaws /usr/lib/jvm/jre-9/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. :)
    getting-started with Oracle JRE 9 on Elementary OS - JRE Configuration

  6. (Optional) Setting JAVA_HOME User Environment Variable

    su [myUserName]

    Or simply:

    exit

    And Edit the Bash environment Configuration file

    nano $HOME/.bashrc

    Append:

    export JAVA_HOME=/usr/lib/jvm/jre-9

    Eventually to Check the JDK 9 exact PATH use in another window:

    ls /usr/lib/jvm/

    Ctr+x to Save & Exit from nano Editor :)
    Next to Load the New Bash Environment:

    bash
  7. Test New Java JRE 9 Installation

    java -version
  8. How-to Install Netbeans 8 IDE for Java 9 on Elementary OS:
    Setup NetBeans Java for Linux.

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