Java is one of the most widely used programming languages in the world, and as a result, it’s important for developers to be able to install and use the Java SDK on their Ubuntu 20.04 servers. In this blog post, we will guide you through the steps needed to install the Java Me on your Ubuntu 20.04 server.
Step 1: Update your system
The first step in installing the Java SDK on your Ubuntu 20.04 server is to make sure your system is up-to-date. Open a terminal window and run the following command:
sudo apt-get update
This command will update the package index on your system and ensure that you have the latest software packages available.
Step 2: Install the Java SDK
Once your system is up-to-date, you can begin the process of installing the Java SDK. The following command will install the default JDK package, which includes the Java compiler, debugger, and other tools:
sudo apt-get install default-jdk
This command will prompt you for confirmation before installing the package. Type ‘y’ to proceed with the installation.
Step 3: Verify the installation
After the installation is complete, you can verify that the Java SDK has been successfully installed by running the following command:
java -version
This command will display the version of the Java SDK that is currently installed on your system.
Step 4: Set up environment variables
In order to use the Java SDK, you will need to set up some environment variables. This will ensure that your system knows where to find the Java SDK. Open the /etc/environment file in a text editor by running the following command:
sudo nano /etc/environment
Add the following lines to the file:
JAVA_HOME=/usr/lib/jvm/default-java
PATH=$PATH:$JAVA_HOME/bin
Save the file and exit the text editor.
Step 5: Reload the environment variables
After setting the environment variables, you will need to reload them so that your system recognizes the changes. Run the following command to reload the environment variables:
source /etc/environment
Step 6: Verify the installation again
Finally, you can verify that the environment variables have been set up correctly by running the following command:
echo $JAVA_HOME
This command will display the path to the Java SDK that you installed earlier.
Congratulations! You have successfully installed the Java SDK on your Ubuntu 20.04 server. Now you can start developing and running Java applications on your server.
