In this tutorial, you learned how to install Java Runtime Environment ( JRE) and the Java Developer Kit ( JDK) on Ubuntu 20.04 and Ubuntu 18.04. You will get the following output: /usr/lib/jvm/java-11-openjdk-amd64 Verify that the environment variable is set: $ echo $JAVA_HOME
Save the file and reload the file to apply the changes to your current session: $ source /etc/environment Then open /etc/environment file using nano text editor: $ sudo nano /etc/environmentĪdd the following line at the end of the file, make sure to replace the location of your Java installation path. You will get the following output: /usr/lib/jvm/java-11-openjdk-amd64/bin/java To set the JAVA_HOME environment variable, first, discover where Java is installed by running the following command. In this tutorial, you’ll learn difference between JRE, Open JDK and Oracle JDK, install Java Runtime Environment on ubuntu and install java on Ubuntu 20.04 and set javahome path on Ubuntu 20.04 step by step.
Ubuntu 20 install openjdk 11 software#
Most of the Java-based software programs use the JAVA_HOME environment variable to discover the Java installation location. Java is a class based, object oriented programming language which is widely used to develop enterprise class applications. Setting the JAVA_HOME Environment Variable in Ubuntu You will get the following output: javac 11.0.10 $ sudo apt install default-jdkĪfter installation, verify the JDK installation by checking the version as shown. To install the JDK, run the following command. Once JRE installed, you might also need the JDK ( Java Development Kit) in order to compile and run a Java-based application. OpenJDK 64-Bit Server VM (build 11.0.10+9-Ubuntu-0ubuntu1.20.04, mixed mode, sharing) OpenJDK Runtime Environment (build 11.0.10+9-Ubuntu-0ubuntu1.20.04) You will get the following output: openjdk version "11.0.10" Once Java installed, you can verify the installation with: $ java -version Now run the following command to install the default OpenJDK 11, which will provide Java Runtime Environment ( JRE). Sudo apt install openjdk-13-jre-headless # version 13.0.4+8-1~20.04 Step 2 Install JAVA (OpenJDK) Use the below command to install OpenJDK on your Debian based systems using the package manager from the default repository. Sudo apt install openjdk-8-jre-headless # version 8u282-b08-0ubuntu1~20.04 Sudo apt install default-jre # version 2:1.11-72 Sudo apt install openjdk-11-jre-headless # version 11.0.10+9-0ubuntu1~20.04, or openjdk 11.0.11 OpenJDK Runtime Environment (build 11.0.11+9-Ubuntu-0ubuntu2.20.04) OpenJDK 64-Bit Server VM (build 11.0.11+9-Ubuntu-0ubuntu2.20.04, mixed mode, sharing) Install Eclipse by installer package Method 1 At the time of this writing, the latest version of Eclipse is: Eclipse IDE 2020-06. Command 'java' not found, but can be installed with: If Java is not currently installed, you will get the following output.
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