Download and Install JDK8 on Ubuntu 15 10 using update alternatives and also set JAVA HOME


This post show how to Install JDK8 on Ubuntu 15.10 (running in VirtualBox hosted on Windows 10).

To download Oracle JDK:
- visit Java SE Downloads page.
- Click to download Java Platform (JDK).
- Accept agreement and sselect download file, jdk-8u65-linux-x64.tar.gz.

Download and unpack in your local storage. /home/eric/jdk1.8.0_65 folder for me.

Setup java and javac update-alternatives:
Run the command:
$ sudo update-alternatives --install /usr/bin/javac javac /home/eric/jdk1.8.0_65/bin/javac 1
$ sudo update-alternatives --install /usr/bin/java java /home/eric/jdk1.8.0_65/bin/java 1

$ sudo update-alternatives --config javac
$ sudo update-alternatives --config java

Where /home/eric/jdk1.8.0_65 is the folder of jdk.

Check the video.


Set JAVA_HOME also:

Setup JAVA_HOME and path to JDK on Linux (Ubuntu in this example), edit the file .bashrc
$ nano .bashrc

Add the line:
export JAVA_HOME=<path to jdk>
export PATH=$JAVA_HOME/bin:$PATH

Where <path to jdk> is the path to the installed JDK.




Alternatively, you can install also Install Oracle java8 on Ubuntu 15.10 via PPA.

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