![]() Securing Your Server to create a standard user account, harden SSH access and remove unnecessary network services. Getting Started guide and complete the steps for connecting to your Linode with SSH and setting your Linode’s hostname and timezone. For this reason, OpenJDK 11 is the recommended version for developing production applications. While there are many available versions of OpenJDK, version 11 is the latest Long-Term-Support (LTS) release as of the time of this guide’s publication. OpenJDK and Java SE are equivalent JDKs that include a Java runtime environment (JRE) and tools for developing and compiling Java applications. OpenJDK is the free and open-source implementation of the Oracle Java Standard Edition (Java SE) Development Kit. This guide will show you how to install the Open Java Development Kit (OpenJDK) 11 on Ubuntu 20.04. Software written in Java can be compiled and run on any system, making Java a versatile platform that can be used to create anything from software to basic web applications. Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.Java is one of the world’s most popular programming languages. Java(TM) SE Runtime Environment 18.9 (build 11.0.1+13-LTS) Display the JDK version javac -version Issue the following commands to verify that JDK/JRE are properly installed and display their version:.Under "Java Platform, Standard Edition" ⇒ "Java SE 11.0.Goto "Control Panel" ⇒ (optional) "Programs" ⇒ "Programs and Features" ⇒ Un-install ALL programs begin with "Java", such as "Java SE Development Kit. If you have previously installed older version(s) of JDK/JRE, un-install ALL of them. Although you can install multiple versions of JDK/JRE concurrently, it is messy. I recommend that you install only the latest JDK. Step 0: Un-Install Older Version(s) of JDK/JRE
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