You can set this environment variable in your user account's 'profile' file. If nothing is displayed, you'll need to install the JDK or set the $JAVA_HOME environment variable.If it returns something like /opt/JDK11 or /user/lib/jvm/java11, then your JDK is installed and properly configured.Open a shell console and type echo $JAVA_HOME and hit Enter. This command installs the Java Development Kit (JDK).Ĭloud Servers from $5 / mo Intel Xeon Gold 6254 3.Before you start, check whether a JDK is already installed. To install the JDK, run the following command, which also installs the JRE: To compile and run some specific Java programs in addition to the JRE, you may need the Java Development Kit (JDK). It allows you to run almost any Java software. This command installs the Java Runtime Environment (JRE). Type y (yes) and press Enter to resume installation. Run the following command to install OpenJDK: If Java was newer installed, yo’ll see the following results: Then you need to check if Java is already installed: After September 2018, OpenJDK 11 is installed.Until September 2018, OpenJDK 10 was installed.This package installs OpenJDK version 10 or 11. By default, Ubuntu 18.04 includes Open JDK (open source JRE and JDK version). The easiest way to install Java is to use the version included in the Ubuntu package. Installing Java with Runtime EnvironmentĬloud Servers from $5 / mo Intel Xeon Gold 6254 3.1 GHz CPU, SLA 99,9%, 100 Mbps channel Try Java Runtime Environment.How to install Java with apt on Ubuntu 18.04: This guide will help you learn how to install different versions of the Java Runtime Environment (JRE) and Java Developer Kit (JDK) with apt. Java and JVM (Java Virtual Machine) are required for many types of software, including Tomcat, Jetty, Glassfish, Cassandra and Jenkins.
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