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To setup Java environment variables, add the following lines to /etc/profile.d/java. Then confirm that correct alternatives are in play: $sudo alternatives -install /usr/bin/javaws javaws /opt/jdk1.8.0_101/bin/javaws 2 It is a best practice to install the latest. Open the terminal using the shortcut method ‘Ctrl+Alt+t’. Perform the following step to install Java on CentOS 8: First, you need to log in as an admin or root user on your system. $sudo alternatives -install /usr/bin/javac javac /opt/jdk1.8.0_101/bin/javac 2 To install java, you need to install the two different implementations of Java on your system. $sudo alternatives -install /usr/bin/jar jar /opt/jdk1.8.0_101/bin/jar 2 $sudo alternatives -install /usr/bin/java java /opt/jdk1.8.0_101/bin/java 2 Next, use command update-alternatives to tell system where java and its executables are installed: You should now move it to a proper folder: $wget -no-cookies -no-check-certificate -header "Cookie: gpw_e24=http%3A%2F%2Foraclelicense=accept-securebackup-cookie" "" can either download Oracle JVM by using CA's account from Oracle website to your computer and upload it to the target computer using FTP etc., or use wget to put it there directly. If you need only JRE, Install only package,īut if you need compiler, Install package, too.ĭnf -y install java-11-openjdk java-11-openjdk-develĬat > /etc/profile.d/java.sh java-test.java <<'EOF'

In this tutorial, we will explain how to install one or more Java (OpenJDK) versions on CentOS 8 and how to set the default Java via alternatives.

The default CentOS 8 repositories include the latest two major Java LTS versions, Java 8 and Java 11.

OpenJDK is an open-source implementation of the Java Platform. Oracle Java License permits only non-commercial use of the software, such as personal use and development use. There are two different implementations of Java, OpenJDK and Oracle Java, with almost no differences between them, except that Oracle Java has a few additional commercial features. Java is one of the most popular programming languages used to build different types of applications and systems.