Java HotSpot(TM) 64-Bit Server VM (build 23.2-b04, mixed mode) Java(TM) SE Runtime Environment (build 1.8.0_06-ea-b13) If the installed version is 8u6, you will see a string that includes the text 1.8.0_06. You can determine which version of the JDK is the default by typing java -version in a Terminal window. It is possible for the version of the JRE to be different than the version of the JDK. When launching a Java application through the command line, the system uses the default JDK. There can be multiple JDKs installed on a system, as many as you wish. See 'Note for Users of OS X that Include Apple Java 6 Plug-in'. If you have not yet installed Apple's Java OS X 2012-006 update, then you are still using a version of Apple Java 6 that includes the plug-in and the Java Preferences app.

To define the location of Java 8 or Java 11, refer to phoenixNAP’s instructional guide on How to Set JAVA_HOME Environment Variable.Determining the Default Version of the JDK How you define the JAVA_HOME environment depends on which version of Java you have. With the default version set, you can configure JAVA_HOME on your CentOS 8.īy doing so, applications compiled in this programming language can easily access Java’s installation path.

Setting the JAVA_HOME Environment Variable If you want to change it, type the number of the version you want, then press Enter. The system displays a list of different Java versions. To set one as the default, use the command: sudo alternatives ––config java You might have 2 different versions of Java on your system. Once the installation finishes, you can check the Java version with the following: java -version Setting the Default Java Version Additionally, if your filename is different, use the filename of your download.ĩ. Note: Replace user with the actual username. Here you will find all the Java download links for different versions of Java SE. Open a web browser and navigate to the Oracle download page. This requires creating an account on the Oracle website.ġ. When installing Oracle Java on CentOS 8, make sure to download directly from the official source, Oracle. Install OpenJDK 11 headlessby entering the following: sudo yum install java-11-openjdk-headlessįor OpenJDK 8 headlessrun: sudo yum install java-1.8.0-openjdk-headless Install Oracle JDK on CentOS 8 It uses minimal system resources and doesn’t include keyboard or mouse support. The headless option is a minimal runtime environment, without a graphical interface, more suitable for server applications. Just like OpenJRE, Java headless is part of OpenJDK and should not be installed on top of it. Installing OpenJDK HeadlessĪnother alternative to OpenJDK is only installing the headlessversion.

The Runtime Environment comes with the Java Development Kit by default. Note: Remember – You don’t need to install OpenJRE if you already have OpenJDK.

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