How to Install Oracle Java on Ubuntu Linux
Step 1) Before you start with the setting up Java, you will need to remove the OpenJDK/JRE from the system. To do this, use below command-
You will be asked for a confirmation. Enter Y
Wait for sometime for uninstall to complete Step 2) Check whether Ubuntu OS architecture is 32-bit or 64-bit. You can do it using the following command-
Step 3) Download latest Java (a zip file e.g., jdk-8-linux-x64.tar.gz) from Oracle site- https://www.oracle.com/java/technologies/javase-downloads.html
Accept the License Agreement.
Select x86 for 32-bit system Select x64 for 64-bit system Select the tar.gz for Ubuntu
Select rpm for Debian based system
Once a download is complete you will see
Step 4) In the terminal, navigate to the location of your zip file
Extract contents of java zip file in a directory of your choice. In this tutorial, we will extract in the Downloads folder itself –
Enter your password, if asked. The unzip will continue. Once done you will see the following folder –
Step 5) Add the following system variables to the end of /etc/profile file To do so – Enter command
Enter the system variables
Press Control+C to enter into command mode
Press ^+X to Exit
Press “Y” to save the changes Step 6) Now reload environment using a command,
Step 7) Its time to let Ubuntu know where our JDK/JRE is located. Copy-paste below lines into a command prompt.
Step 8) Tell Ubuntu that our installation i.e., jdk1.8.0_05 must be the default Java. Use below commands to do this-
Step 9) Test the installation using below command,
A successful installation will show information as seen in the above screenshot.
