You can follow the steps in this article to install JAVA OpenJDK in all the Ubuntu versions –
1. OpenJDK Packages is available under the native apt repository.
The command given below will find the available java version for Ubuntu OS –
# apt-cache search openjdk
Here, OpenJDK JAVA 11 should be present within the list.
2. Execute the command given below –
# sudo apt-get install openjdk-11-jre openjdk-11-jdk
This will install Java Development Kit (JDK) and Java Runtime Environment (JRE).
3. Verify the Java version using the below-mentioned command –
# java -version
Output :
openjdk version "11.0.6" 2020-01-14
OpenJDK Runtime Environment (build 11.0.6+10-post-ubuntu-1ubuntu118.04.1)
OpenJDK 64-Bit Server(build 11.0.6+10-post-ubuntu-1ubuntu118.04.1, mixed mode, sharing)
4. Now, set the Java environment variable by adding the command given below to /etc/environment –
# echo "JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64/" >> /etc/environment
# source /etc/environment
5. Finally, verify the environment value.
# echo $JAVA_HOME
Output :
/usr/lib/jvm/java-11-openjdk-amd64/
This is all you have to do to install the OpenJDK JAVA 11 on Ubuntu.
