How To Install Java 8 On Ubuntu

It is highly recommended to install Java in Ubuntu along with other software, after installing your OS so that you can use it for running various Java applications. First, you have to update the package index. Continue below to install Java 8…. Installing Java 9 Using PPA. Note : This guide provides instructions for Ubuntu 18. 04, Linux Mint 13/17. The next version of Oracle Java will be released next year (2013), but you don't have to wait to install it. 04 Lucid Lynx and derivative systems, including Linux Mint 16 Petra, Linux Mint 14 Nadia, Linux Mint 13 Maya and Elementary OS 0. To install Oracle Java 8, complete the following steps: Add the WebUpd8 Java repository to the sources list, using the following command: sudo add-apt-repository -y ppa:webupd8team/java. Install OpenJDK on Ubuntu. This post shows how to install Orcale JDK using apt-get or by downloading from the Oracle site on Ubuntu. So in this tutorial I will explain how to find the path to the Java installation directory and set JAVA_HOME in Ubuntu Linux. In this training, we will install Java on Ubuntu. For information on installing Oracle JDK8 and JDK9 in Ubuntu / Linux Mint or Debian, see:. In this article, We are going to perform How to Download and Install Oracle JAVA 8 on Ubuntu 18. In this article, we will learn how to install Java 8 on Ubuntu OS. How to install Cassandra on Ubuntu 16. Hello World in Java on Linux. In Ubuntu, to install Java there are lots of options available - openjre, defaultjre or oraclejre. 04 – accept terms. Ubuntu 16. How to install Java 8 using the Oracle JDK. First delete the file you downloaded as it isn't needed and proceed with these instructions:. After running the commands above, you should see a prompt to accept the PPA key onto Ubuntu… accept and continue. 04 and OpenJDK 7 will be installed on Ubunto 12. In this tutorial we learned how-to install Jetty 8 on Ubuntu 14. Oracle Java 8 will continue to receive regular updates through until at least December 2020, and is supported through until March 2025. 10 with the use of PPA. The installation is quite simple and assumes you are running in the root account, if not you may need to add 'sudo' to the commands to get root privileges. To check if Java is already installed: java –version. If the following information appears then Java is not installed before. This tutorial shows you how to install Oracle Java SE 8 on Ubuntu 14. Once Java 11 is available by default, it will install Java 11. How I can install Oracle Java 8? How to Install Oracle Java JDK 8 in Ubuntu 16. As shown below, you’ll find both Java5 and Java6 JDK and JRE related packages. After that you will install the necessary dependencies to create Java apps with SQL Server. This article will guide you through the process of installing and managing different versions of Java using apt-get. Debian provides several Java implementations. We shall choose the Oracle JDK 8. 04 LTS server. After Installation set the Java 9 as a default Oracle Java Version using below command. It's a Jupyter notebook environment that requires no setup to use and runs entirely in the cloud. Execute the NetBeans installer. In this tutorial we’ll learn how-to install Java 8 on Ubuntu 16. This tutorial will also work fine on other versions of Ubuntu like Ubuntu 15. This is the easiest way to install java on Ubuntu, open terminal run command, sit back on the chair, have a coffee, and java or other package will be install automatic. To Install Oracle Java 8 use below command. For NetBeans to work, you need to have Java installed, which has to be installed separately as JDK (Java Development Kit). Continue below to install Java 8…. How to Uninstall Java on Ubuntu By Dmytro Shvechikov 02/14/2019 Java Tutorials 0 Comments There are 2 options depending on the type of JDK (OpenJDK or Oracle JDK) how to uninstall Java in Ubuntu. Install Java (JRE or JDK) on Ubuntu 16. Java is free to download and used for commercial use. To automatically set up the Java 8 environment variables, you can install the following package: sudo apt-get install oracle-java8-set-default-----OpenJDK Java 8 has been made into official Ubuntu repositories for 14. In this tutorial we will using Oracle java version 8 , this is the latest stable version of Java at time of writing, and the recommended version to install. Execute the NetBeans installer. Also Read - How to install Oracle Java 8 on Ubuntu 18. To install java PPA for Ubuntu and Linux Mint, we need to add webudp8team Java PPA repository in our system. JAVA comes with two packages (JDK & JRE). Greetings from Oz. Oracle Java: Oracle Java is the official JDK Java Se Platform version 7 implementation from Oracle. Java and the JVM (Java' s virtual machine) are widely used on many kinds of software. Ubuntu Mobile: An embedded operating system designed for use on mobile devices. 04 & Linux Mint 18. Next, Install Java Runtime Environment. I just cannot get it working, but have never had How to install Java on Ubuntu 8. 04 - accept terms. Ashwin Uncategorized 2014-03-25 1 Minute. Unblock any international website, browse anonymously, and download movies and Mp3 with complete safety with CyberGhost, just for $2. Thanks for the tutorial on how to install oracle java 8 on ubuntu. The easiest option for installing Java is to use the version packaged with Ubuntu. The Java Servlet and JavaServer Pages specifications are developed under the Java Community Process. The other day I needed to install Oracle Java JRE 8 on Ubuntu 18 and I just could not do it. Install OpenJDK (APT Install) Install OpenJDK via apt install command automatically. : Java 8) is not already on your computer, you will need to download it from the Oracle site and install it. The extension jnlp (Java Network Launching Protocol) is used to launch and manage Java programs via the internet or network. Many people have aversion to Java. It is a Bash script that did a professional install of Oracle JDK 1. Prerequisites To be able to install Oracle Java JDK, you need to log in as a user with sudo privileges. Remove Jdk Ubuntu. 28, improved boot speed, a minimal installation option, VLC as standard, an updated LibreOffice 6. 04/Ubuntu 18. All you will need is a running instance of. Nevertheless, in 2013, Oracle declared that they might postpone Java 8 by a single year, so as to mend the Java security model. Step by step guide on How to Install ApacheTomcat 9 on Ubuntu 18. sudo apt install oracle-java8-installer. Debian provides more than a pure OS: it comes with over 59000 packages, precompiled software bundled up in a nice format for easy installation on your machine. 10, Ubuntu 14. I'll be working from a Liquid Web Core Managed Ubuntu 14. Installing Oracle's Java 8 has never been easier to into our Linux Ubuntu 16. Like apt and yum, it is a package management system and mainly used to download and install packages from the Python Package Index ( PyPI ). How to Install Minecraft on Ubuntu By Robert Zak – Posted on Feb 27, 2018 Feb 26, 2018 in Linux Even after all these years, Minecraft continues to confound the world with its immeasurable popularity and the creativity exhibited by its users. Step 1: Add the repository. Next, Install Java Runtime Environment. To install Oracle Java 8, complete the following steps: Add the WebUpd8 Java repository to the sources list, using the following command: sudo add-apt-repository -y ppa:webupd8team/java. Here are the steps I took to install the official Java SDK on my Ubuntu virtual machine. 04 NodeJS is a JavaScript framework that allows you to build fast network applications with ease. Java 8 is the current stable Java version since Java 7 is already reach end Install OpenJDK Java 8. This guide will walk you through how to manually install Oracle JDK 12 on Debian 9. 04 provides by the openjdk-8-jdk-headless package. Discover how easy it is to install Ubuntu desktop onto your laptop or PC computer, from either a DVD or a USB flash drive. Add the PPA. How to install Java 1. Ubuntu Java JRE vs JDK The Java Runtime Environment (JRE) is not a Java development platform, JRE provides the Java virtual machine and it must be loaded on a system for Java applications to execute. How do I install Java 10 on Ubuntu? To install Java JDK10, follow the steps below: Step 1: Add A Third Party PPA to Ubuntu. Historically, the runtime shipped with Ubuntu, however this changed in 2011. Eclipse IDE for Java Developers Eclipse is a software designed to manage IDE for Java language. By default, Ubuntu 18. JAVA is mandatory to run certain applications in Linux and windows machine. To install Java 8 (which will reach its end of life January 2019!), follow these instructions:. Oracle Java: Oracle Java is the official JDK Java Se Platform version 7 implementation from Oracle. Nevertheless, in 2013, Oracle declared that they might postpone Java 8 by a single year, so as to mend the Java security model. How do I start or run this program. This step can be done in many ways for different options as JDK comes in two versions, one is version 11 which is the latest up to date version of JDK while the other one is version 8 which is an older version which still gets support. Installation of NetBeans from Ubuntu Packages. Re: How to install Oracle Java 8 on Ubunt 16. Each of them have a development environment (JDK) and a runtime (known as JRE, or Java Virtual Machines JVM). The installation is quite simple and assumes you are running in the root account, if not you may need to add 'sudo' to the commands to get root privileges. First, update the package index. After running the commands above, you should see a prompt to accept the PPA key onto Ubuntu. This is a quick tutorial shows how you can easily install Oracle Java 9, early access release so far, in current supported Ubuntu releases and derivatives, including Ubuntu 15. Install OpenJDK (APT Install) Install OpenJDK via apt install command automatically. Install Java on Ubuntu. Specifically, this command will install the Java Runtime Environment (JRE). Example: For Java 8u79 replace 8u73 with 8u79. sudo apt-get install default-jre. Install Oracle Java 8 / 9 in Ubuntu 16. Ubuntu's repositories contain a package that will install either Java 10 or 11. Unblock any international website, browse anonymously, and download movies and Mp3 with complete safety with CyberGhost, just for $2. Before we install Tomcat on Ubuntu, we need to install Java to execute the Java web application code. Howto install Oracle (Sun) Java JRE for Linux Mint. In this tutorial we’ll learn how-to install Java 8 on Ubuntu 16. The first step towards Kubernetes Certification is installing Kubernetes. On Linux there are binaries available as DEB, RPM and. Install OpenJDK on Ubuntu. Install Ubuntu Desktop on Hyper-v in Windows 10 – Technig. 04/Debian 9. sudo apt-get update Next, install Java. $ sudo apt search openjdk. 04 LTS server with Apache and PHP installed, and I'll be logged in as a non-root user. Before installing, you may want to do apt-cache search to find out all available packages that starts with sun-java. Prebuilt Packages for Linux and BSD¶. How to install Cassandra on Ubuntu 16. Installing teamviewer on 64-bit Ubuntu 13. 04, Ubuntu 14. OpenJDK 6 will be installed on Ubunto 12. In my freshly installed centos 6 install, I had my alternatives tool (as you can see it captured in my previous post) pointing to: "alternatives --config JAVA" was pointing to JRE and "alternatives --config JAVAC" was pointing to JDK. Install the OpenJDK package by running: sudo apt install default-jdk. 10 Saucy Salamander, Ubuntu 12. By default, Ubuntu 18. 10 If you don't want to add that PPA, then what you have to do is go to Oracle's website and download JAVA JRE and install it manually. Another alternative Java install is with Oracle JRE and JDK. 04 And Derivative Systems Posted on December 2, 2018 by Geekster — No Comments ↓ As you may know, the Oracle Java 8 (stable) has been recently released, coming with a lot of changes and new features. The easiest option for installing Java is using the version packaged with Ubuntu. 10 and Ubuntu 16. Ubuntu chooses OpenJDK as its default JDK, which is not 100% compatible with Oracle JDK. I will show you through the step by step installation JRE (Java Runtime Environment) and JDK (Java Development Kit) on Ubuntu 16. We will begin by installing the default JDK/JRE. To install Oracle Java 8, complete the following steps: Add the WebUpd8 Java repository to the sources list, using the following command: sudo add-apt-repository -y ppa:webupd8team/java. 2 How to Install NetBeans on Windows Step 0: Install JDK. For Ubuntu 14. zip archives. These guide should also work on Debian and Linux Mint but was tested and written for Ubuntu. At this time various CMS running but WordPress is an user friendly. 04 provides by the openjdk-8-jdk-headless package. OpenJDK 6 will be installed on Ubunto 12. Step 1) Before you start with the setting up Java, you will need to remove the OpenJDK/JRE from the system. 04, Ubuntu 10. You can either use command line or browser to download the JDK, Verify Java. Java is a programming language which is actually developed by Sun Microsystems. How to Install Oracle Java 8 on Ubuntu 18. The internet is full of instructions how to install Java on Ubuntu 18, but all of them became irrelevant at once. Once you have verified if Java is installed or not, choose the type of Java installation that you want with one the following: sudo apt install default-jdk sudo apt install default-jre. It automatically downloads java package from Oracle web server, and installs it on your system. sh installer from the official site of Oracle. apt-get install default-jre. the installer should install the latest Java JDK 9 on your Ubuntu machines. To do this, use below command-. Let's take a look at how to install OpenJDK 11 on Ubuntu 18. 04 & Linux Mint 18. 10 Saucy Salamander, Ubuntu 12. Note : This guide provides instructions for Ubuntu 18. Re: How to install Oracle Java 8 on Ubunt 16. $ sudo apt search openjdk. The instructions below are for installing version Java 8 Update 73 (8u73). I just cannot get it working, but have never had How to install Java on Ubuntu 8. After running the commands above, you should see a prompt to accept the PPA key onto Ubuntu. But the installation is the same for the 16. The internet is full of instructions how to install Java on Ubuntu 18, but all of them became irrelevant at once. Example: For Java 8u79 replace 8u73 with 8u79. Install Java. So, for Hadoop to run on your computer, you should install. In Ubuntu 16. 04 LTS Xenial Xerus. 04 and that has Java 7 or 8 installed. In the Variable Name field, enter either: JAVA_HOME if you installed the JDK (Java Development Kit) or. Java 11 has been released on September 25, 2018 and it’s the first long term support (LTS) release since Oracle changed release schedule. 10 (Intrepid Ibex). com Linux Tips, Tricks & News Today ! – Through on this article you will get idea to Install java, OpenJDK 6, OpenJDK 7, OpenJDK 8 on RHEL, CentOS, Ubutnu & Mint, Debian, Fedora & openSUSE. Continue below to install Java 8…. Install Apache Hadoop on Ubuntu. I'm using Ubuntu 9. First, update the package index. Ubuntu repositories will have either Java 10 or 11. First, we need to make sure our local server is pulling the latest updates. This method will show you how to download the package from its download page and install it in Ubuntu without using external PPAs or third party sources. If you don’t, run the following command in terminal: sudo apt install openjdk-8-jdk. Java EE depends on Java SE. Get the JDK from Oracle/Sun; download the Java JDK Here. How to Manually Install Java 8 on Ubuntu 16. Tomcat is a web server that is used to serve Java applications. Hi, Let's know the commands to install Oracle Java 8 on Ubuntu 16. 04 provides by the openjdk-8-jdk-headless package. Historically, the runtime shipped with Ubuntu, however this changed in 2011. Java SE 9 is the latest update to the Java Platform. See "JDK - How to Install". How to install Java 8 & 7 on Ubuntu using Docker There is no any official java docker images available for oracle java versions. gz file, depending on the file it is either the source code which you build the executables with yourself or it is some binary files (that is executables) you copy or move into certain directories. Before installing the Android Studio, you need to have a workable version of Java installed on your system. Now you have completely removed JDK from your Ubuntu os. In this article we will walk through the installation steps of Apache Tomcat 9 on CentOS 7. Step 0: Check if JDK has already been Installed. At this time various CMS running but WordPress is an user friendly. The easiest way to install Oracle Java JDK 8 on Ubuntu is via a third party PPA… To add that PPA, run the commands below. Hadoop supports all java version greater than 5 (i. How to Install Oracle Java 8 on Ubuntu 16. The stable release of Java version is 1. Here I wanna show you how to install JDK version 8 on specific Microsoft Windows 10, Mac OS X El-Capitan and Ubuntu Server 16. This is a quick tutorial shows how you can easily install Oracle Java 9, early access release so far, in current supported Ubuntu releases and derivatives, including Ubuntu 15. I really appreciate all you have done/do to teach folks the subjects you have covered thus far. Note : This guide provides instructions for Ubuntu 18. Install Java From Oracle Website. Zulu OpenJDK 13, 11, 8 or 7 builds for Windows, macOS and Linux can be downloaded from this page. It is ideal License: Free. If you have a need for Java Servlets, you'll probably want to deploy Tomcat. 04 Lucid Lynx and derivative systems, including Linux Mint 16 Petra, Linux Mint 14 Nadia, Linux Mint 13 Maya and Elementary OS 0. This is the easiest option when installing Java since it comes packaged with Ubuntu system. We shall choose the Oracle JDK 8. How to install Java or the equivalent in Ubuntu 8. This DrJava-based Java programming environment is no longer being supported (because DrJava in no longer being actively developed and DrJava is incompatible with Java 11). We will not go over connecting via Python applications using object-relational mappers (ORMs) but these steps can be used as a prerequisite to working with an ORM such as SQLAlchemy or Peewee. WordPress is an opensource CMS (Content Management System). 04 - accept terms. [email protected]:~$ sudo apt-get remove --purge libreoffice* [sudo] password for itsmarttricks: Reading package lists. Download / install Zulu OpenJDK 13, 11, 8 or 7 in Ubuntu, Debian, Linux Mint, RHEL, etc. Installing this new version of Java on Ubuntu is easy because there is a PPA for it:. Installing Java is simple and quick. The internet is full of instructions how to install Java on Ubuntu 18, but all of them became irrelevant at once. At the time of writing, Java 8 is not in the sources list by default, so we have to add the “Webupd8” repo, which contains Java 8. Here, we will see how to install Oracle Java JDK 11 / 8 on Ubuntu 16. This method will show you how to download the package from its download page and install it in Ubuntu without using external PPAs or third party sources. sudo add-apt-repository ppa:webupd8team/java sudo apt update. an open-source implementation of Java, In Ubuntu 18. If you have already installed the Java 6 or Java 7 and want to replace the Java 8 as the default, then use this command "sudo apt-get install oracle-java8-set-default". OpenJDK is the default option of installing Java on Ubuntu. 04 LTS server with Apache and PHP installed, and I’ll be logged in as a non-root user. 🔴Mac>> ☑How To Install Nordvpn On Ubuntu Best Vpn For Torrenting ☑How To Install Nordvpn On Ubuntu What Does Vpn Stand For ☑How To Install Nordvpn On Ubuntu > Free trials downloadhow to How To Install Nordvpn On Ubuntu for 8:06a Updated Splunk, Alteryx stocks surge after rival Tableau agrees to be bought by Salesforce; 8:04a. How to install NetBeans on Ubuntu 160. It is written in Java and works on cross-platform. Oracle Java PPA for Ubuntu and LinuxMint is being maintained by Webupd8 Team. 04 LTS java -version sudo apt-add-repository ppa:webupd8team/java sudo apt-get update sudo apt-ge. Use this tutorial to install OpenJDK Java 8 on Ubuntu 19. Java SE 9 is the latest update to the Java Platform. The tutorial explains how to install JDK (Java Development Kit) and JRE (Java Runtime Environment) on Linux Ubuntu Systems. It is possible to run a. One of the important perquisite of Tomcat 9 is Java 8 or higher version, lets jump into the installations steps. It is designed to be lightweight, high-performance, embeddable, extensible, and flexible, thus making it an ideal platform for serving dynamic HTTP requests from any Java application. 04 machine that is used by today's web server. Here's a list of Java environment. Prebuilt Packages for Linux and BSD¶. Which version of oracle client works on it All recent Oracle version support different Linux flavours The problem is Oracle usually don't provide direct Oracle Client download except for Windows. Visit this link to download the appropriate JDK for your Windows (32 or 64 bits), accepting Oracle's licence agreement. Installing OpenJDK 11 on Ubuntu 18. 10 it has been included as an option as part of the standard Ubuntu Server Edition. This quick tutorial shows you how to easily install Oracle Java JDK 8 and/or 10 in Ubuntu 18. I really appreciate all you have done/do to teach folks the subjects you have covered thus far. Historically, the runtime shipped with Ubuntu, however this changed in 2011. Once Java 11 is released, this package will install Java 11. How to install OpenJDK 8 in Ubuntu 14. This tutorial shows you how to install OpenJDK 8,11 and Oracle JDK 8,11 on Ubuntu 18. At this time various CMS running but WordPress is an user friendly. 04 comes with OpenJDK's java version , but we will install Oracle's java version, using Oracle java make your java application run more stable. Install Java From Oracle Website. Before we install Tomcat on Ubuntu, we need to install Java to execute the Java web application code. How to install Oracle Java 8 on Ubuntu Open terminal; Type sudo apt-get update sudo apt-get install default-jre sudo apt-get install default-jdk Choose the java. 2 on Ubuntu 14. Oracle Java PPA for Ubuntu is being maintained by Webupd8 Team and can be downloaded from there easily , which sets up everything for you on its own. Android development and working with applications in all done in Java, so let us install it through our Ubuntu command line as follows: Open the Terminal application either through the application launcher search or the Ctrl+Alt+T shortcut. Follow the steps below to install the Java on your Ubuntu system: Update the package index. 8 in Ubuntu 16. Home » UNIX/Linux » Ubuntu » How to Install Python PIP on Ubuntu 18. The tutorial explains how to install JDK (Java Development Kit) and JRE (Java Runtime Environment) on Linux Ubuntu Systems. 04 OpenJDK 11 was released this past week. Follow the below steps to Install Oracle Java 8 on Ubuntu 18. When you download a tar. Windows 8 – Go to Control Panel > System > Advanced System Settings Windows 10 – Search for Environment Variables then select Edit the system environment variables ; Click the Environment Variables button. 3) After installing Java you need to set two. Step 2: Extract JDK to Java's default location. 04, Linux Mint 13/17. You need to add the following PPA to your Ubuntu system. How to Set Up a Minecraft Server on Ubuntu or Debian. We will not go over connecting via Python applications using object-relational mappers (ORMs) but these steps can be used as a prerequisite to working with an ORM such as SQLAlchemy or Peewee. $ sudo yum install java-11-openjdk-headless. How to install Oracle Java 13 on Ubuntu 18. I was successful to install openjdk-8-jdk on ubuntu-14. In my freshly installed centos 6 install, I had my alternatives tool (as you can see it captured in my previous post) pointing to: "alternatives --config JAVA" was pointing to JRE and "alternatives --config JAVAC" was pointing to JDK. Results 1 - 8 of about 8. Remove Jdk Ubuntu. Install with JavaPackage. Java JDK is the base for the JAVA developers, and this guide will be more useful for them to build a development environment when they especially use Ubuntu or Linux Mint. 04 LTS (and its forks) using PPA. java -version Install Java Open JRE or JDK on Ubuntu 16. It's possible that you install multiple JDK versions on the same PC. 04 LTS, LinuxMint 19, 18 using PPA. After spending well more than 100 hours running these tests, the results are now available and our findings. I will show you through the step by step installation Java JDK 8 on a Ubuntu 14. 2 How to Install NetBeans on Windows Step 0: Install JDK. Uninstall Java from Ubuntu Linux Introduction Hopefully you won’t need these instructions due to a botched install, but there may come a time where you need to uninstall a version of the JDK/JVM. 04 LTS and 10. 04 LTS java -version sudo apt-add-repository ppa:webupd8team/java sudo apt-get update sudo apt-ge. 04 LTS (and its forks) using PPA. 04 LTS and need Java, you can get OpenJDK 8. Download and Install JAVA 8 on Linux Ubuntu. 04, Linux Mint 18 1. Java is a programming language which is actually developed by Sun Microsystems. 10 Leave a comment Posted by splittingelectrons on 24 February 2012 Download and install the latest JAVA JDK. We also learned installing Oracle Java 7 by downloading the archive and install it manually. The extension jnlp (Java Network Launching Protocol) is used to launch and manage Java programs via the internet or network. Install OpenJDK on Ubuntu. How to Set Up a Minecraft Server on Ubuntu or Debian. To install java 7 using yum, run. After running the commands above, you should see a prompt to accept the PPA key onto Ubuntu… accept and continue. It supports audio recording and various video file formats. Below are the typical commands to install the Java SDK using the Java repository. 04 and other other Ubuntu-based distributions. Recommended system requirements: 2 GHz dual core processor or better; 4 GB system memory; 25 GB of free hard drive space. Nginx use as reverse-proxy for Apache tomcat 7 that separate the web or HTTP tasks with the web application. Once the package index is updated install the default OpenJDK package with: sudo apt install default-jdk. 04 Trusty Tahr, Ubuntu 13. 1 on Ubuntu-GNOME 15. To make the install of Java 11 a hustle free, you can simply use the Linux Uprising PPA repository. Jetty is an open-source HTTP Servlet Server written entirely in Java. I’ve heard reports that the default Java instance in the Ubuntu repositories will work, but I prefer to use the “official” version. For Ubuntu 14. sudo apt-get update. Installing Apache Maven. Howto install Oracle (Sun) Java JRE for Linux Mint. 10 on an Acer Chromebook C720 until earlier this week, when I made the mistake of installing Ubuntu 14. Once you have verified if Java is installed or not, choose the type of Java installation that you want with one the following: sudo apt install default-jdk sudo apt install default-jre. 04 provides by the openjdk-8-jdk-headless package. While writing this article latest JAVA standard version available to download was 11. This post shows how to install Orcale JDK using apt-get or by downloading from the Oracle site on Ubuntu. Java is free to download and used for commercial use. Set Java environment variables.