How to Install Oracle JDK 13 on Lubuntu 20.04 Focal LTS Gnu/Linux

GNU/Linux Lubuntu 20.04 Oracle JDK 13 Installation Guide How to Download and Install Oracle JDK 13 in Lubuntu 20.04 Focal LTS 64-bit GNU/Linux - Step by step Tutorial. And Java SE 13 for Lubuntu 20.04 is a Development Environment for Building Applications, and Components Using the Java Programming Language. Here are some Key Points of JDK: Compiler and Tools: The JDK includes a Java compiler (javac) that translates Java source code into bytecode, which can be executed by the Java Virtual Machine (JVM). It also contains various tools for development, debugging, testing, and monitoring Java applications. Java Runtime Environment (JRE): In addition to the development tools, the JDK includes the Java Runtime Environment (JRE), which is necessary for running Java applications. The JRE consists of the JVM, class libraries, and other components required for executing Java bytecode. Java API Documentation: Oracle JDK provides comprehensive documentation for the Java API (Application Programming Interface). This documentation includes detailed descriptions of classes, interfaces, methods, and other elements of the Java standard library, making it a valuable resource for developers. Platform Support: Oracle JDK is available for multiple platforms, including Windows, macOS, and various Unix/Linux distributions. This allows developers to write Java applications that can run on a wide range of operating systems and hardware architectures. Security Features: Oracle JDK includes security features to help developers build secure Java applications. This includes support for cryptographic algorithms, secure communication protocols, and mechanisms for managing security policies and permissions. Performance Optimization: Oracle continuously works on improving the performance of the JDK, including the JVM and the Java runtime libraries. This ensures that Java applications run efficiently and can scale to meet the performance requirements of various use cases. Updates and Support: Oracle provides regular updates and patches for the JDK to address security vulnerabilities, bug fixes, and performance enhancements. Developers can also access technical support and resources through Oracle's website and community forums. Licensing: As of recent updates, Oracle has changed its licensing and support model for Oracle JDK. While Oracle JDK is still available for free for development and testing purposes, commercial use may require a subscription or licensing agreement. Alternatively, developers can use OpenJDK, which is an open-source implementation of the Java Platform, as an alternative to Oracle JDK. Finally, the guide includes instructions on How to Get Started with Java Development on Lubuntu 20.04. 1. Launching Terminal Open a Terminal Shell Emulator (Press "Enter" to Execute Commands) In case first see: Terminal QuickStart Guide. 2. Downloading Download Oracle JDK 13 GNU/Linux Package Oracle JDK 13 .deb 64-bit Downloading Oracle JDK 13 for GNU/Linux Systems 3. Installing Oracle JDK 13 Then to Setup Oracle JDK 13 on Lubuntu 20.04 Linux First, Access the Target, usually in the Downloads folder: (But if downloaded with Firefox it can be instead into /tmp/mozilla*) cd && cd Downloads Now to Confirm the Package is there do: ls . Finally, to Install JDK 13 simply: sudo dpkg -i jdk-13*.deb 4. Setting Up Java Next to Set Up Oracle Java JDK 13 You can directly Copy & Paste the Commands into Terminal.. sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk-13*/bin/java 1165 sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk-13*/bin/javac 1165 sudo update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk-13*/bin/jar 1165 sudo update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk-13*/bin/javaws 1165 Checking or Setting the System Java Version in Use with sudo update-alternatives --config java And for the Java Compiler instead: sudo update-alternatives --config javac To Switch of Java Version Just Enter the Selection Number on First, Column. :) 5. Setting Up Env (Optional) Setting JAVA_HOME User Environment Variable And Edit the Bash environment Configuration file nano $HOME/.bashrcAppend:export JAVA_HOME/usr/lib/jvm/jdk-13 Replace with the actual one on the above Command. Possibly to Check the JDK 13 exact PATH use in another window: ls /usr/lib/jvm/ Ctr+x to Save & Exit from nano Editor :) Next to Load the New Bash Environment: bash Finally, Test New Java JDK 13 Installation. java -version 6. Getting Started Guide Getting Started with Java Development on GNU/Linux Java Dev QuickStart Guide Getting Started with Java Development on Linux Tutorial

How to Install Oracle JDK 13 on Lubuntu 20.04 Focal LTS Gnu/Linux

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