To find the actual path you have to use the list command multiple times to reach the actual folder. The issue with this method is that the ‘which’ command does not provide a direct folder path but a link to the folder. The first one is to use the following ‘which’ command. There are two ways to find the installation folder. It's time to dig deeper and find the java installation folder. Once you have the confirmation of installation and version of the java compiler. If you want to install java in Linux with a different version, then you have to mention it explicitly in the installation command. In that case, run the following command to install the java from the default package. If you encounter the message “Command ‘javac’ not found”, it means that your system does not have any java compiler installed. You can see the version number in the output. To check the version of your installation, run the following command. Check for the Java Compilerīefore setting up the JAVA_HOME variable, You need to confirm the installation of the java compiler and its version. All the methods mentioned in this tutorial are also valid for any other Linux distribution. Note: The commands in this tutorial are executed on the Ubuntu 20.04 system. In this tutorial, you will learn different methods to set up the JAVA_HOME variable and different configuration options that are available to you while setting up this system variable. You need to set up the JAVA_HOME variable correctly to run your java program otherwise you will encounter this error message “Error: JAVA_HOME is not defined correctly.”. Every time a java program or application is run, this variable is invoked. JAVA_HOME is an operating system environment variable that stores the location of the java installation folder.
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