In this quick tutorial, we're going to encompass in-depth how to install Coffee JDK.

We'll start beginning with how to download and install JDK on Windows 10. Then, we'll highlight how to accomplish the same thing in Mac.

Lastly, nosotros're going to explain how to install JDK on Ubuntu.

So, let's get started!

What is JDK?

JDK is the abbreviation of the Java Development Kit , a packet that offers an environment for developing, debugging, and monitoring Java-based applications.

In short, JDK provides a set of ready-to-use tools that we can use to build java programs.

Earlier installing JDK, we need first to check if information technology's already installed (or not) on our operating organization.

Now, let'south become down the rabbit hole and run into how to install Java JDK on Windows x, Mac, and Ubuntu.

How to Install Java JDK on Windows x

Commencement thing starting time, let'due south explore how to cheque whether Java JDK is already installed on our windows 10 auto.

  • Go to the search bar and type CMD

  • Open the control prompt from the search result

  • When the command prompt opens, blazon this command: javac –version.

If the response is something similar:

                      C:\Users\Asus>javac -version         'javac' is not recognized as an internal or external control,         operable program or batch file.         C:\Users\Asus>

Then, this merely means that JDK is not installed on your Windows ten.

Obviously, we need to download the JDK package before starting the installation process. To practise that, please refer to the post-obit article: How to install Java on Windows 10.

Finally, we need to add together the JDK bin directory to the PATH. The PATH variable points to the location of the executables: javac and java.

Please bear in mind that if we don't add JDK to the PATH, then we need to specify the full path for the executables every fourth dimension nosotros want to compile or run a Java program.

In other words, to compile myProgram.java, nosotros demand to run:

                      C:\Plan Files\Java\jdk1.8.0_261\bin\javac myProgram.java

Instead of:

                      javac myProgram.coffee

Install JDK on Mac

First, nosotros demand to verify if JDK has been already installed on our Mac. To do and then, follow these steps:

  • Click the Launchpad icon, then type Terminal in the search field

  • Open the terminal

  • Blazon the javac -version control

If you lot got command not found bulletin, and then JDK is not installed.

In case the JDK is non installed, so nosotros need to download it starting time:

The process of installing Java JDK on Mac is pretty easy and straightforward:

  • Open up the .dmg file to starting time the installation magician

  • Click Continue and then Install

  • Enter your credentials and click Install Software

  • In one case the installation is completed, a confirmation alert will exist displayed

  • Later the installation, you volition be asked to keep or delete the package file. (You can choose the delete option to relieve some disk space)

Install JDK on Ubuntu

The get-go step is e'er checking whether JDK is installed or non. To practise so, blazon the post-obit command lines:

                      [root@devwithus ~]$ javac -version         javac 1.eight.0_262         [root@devwithus ~]$ coffee -version         openjdk version "1.8.0_262"         OpenJDK Runtime Environment (build 1.viii.0_262-b10)         OpenJDK 64-Flake Server VM (build 25.262-b10, mixed manner)         [abdioun@devwithus ~]$

As shown higher up, JDK is already installed on my Ubuntu machine.

Installing the Default OpenJDK

The easiest option for installing Java JDK on Ubuntu is to install the default OpenJDK which is an open-source implementation of the Java SE Platform Edition.

Before starting the installation process, nosotros need to update the apt package. Open a terminal (Ctrl+Alt+T) and type:

                      [root@devwithus ~]$ apt update

Next, install the default Coffee OpenJDK package with:

                      [root@devwithus ~]$ apt install default-jdk

That's it, the above command will simply install Coffee eleven or a newer version. Congratulations, you successfully installed OpenJDK on Ubuntu.

Please keep in mind that nosotros can install a specific version - for example Open up JDK 8 - instead of the default OpenJDK 11.

To practise so, blazon the post-obit command line:

                      [root@devwithus ~]$ apt install openjdk-eight-jdk

Now, permit's take a look at how to install the Oracle'southward official JDK.

Installing Oracle JDK

Starting with Coffee 11, Oracle JDK is licensed nether Oracle Binary Code License Agreement. This means that we tin no longer use Java for business or product purposes without a commercial license.

To install the official Oracle JDK, we first have to create an Oracle account to download the JDK version nosotros need.

Delight keep in mind that nosotros demand a third-party installation script from hither, since we can't install JDK directly through packet managers.

Ane another important matter to mention is that the downloaded JDK version must friction match the 3rd-political party installation script version.

And so firstly, we demand to add together the PPA repository using the command below:

                      [root@devwithus ~]$ apt install software-properties-mutual         [root@devwithus ~]$ apt update         [root@devwithus ~]$ add together-apt-repository ppa:linuxuprising/java

Once the PPA repository is added, we can proceed to install Java JDK on Ubuntu.

Secondarily, permit'southward download JDK from the Oracle official downloads folio. Observe the version you need and download it.

At the time I'm writing this article, the latest JDK version is sixteen.0.one. And then, let'south click on jdk-sixteen.0.1_linux-x64_bin.tar.gz package for Linux.

install oracle jdk ubuntu

Next, we need to transfer the downloaded file to our Ubuntu server using scp command:

                      scp path-to-file/jdk-xvi.0.1_linux-x64_bin.tar.gz root@devwithus:~

Now, permit's move jdk-16.0.1_linux-x64_bin.tar.gz to the /var/cache/oracle-jdk11-installer-local directory.

                      [root@devwithus ~]$ mkdir -p /var/cache/oracle-jdk11-installer-local/         [root@devwithus ~]$ cp jdk-16.0.1_linux-x64_bin.tar.gz /var/enshroud/oracle-jdk11-installer-local/

Finally, we'll install Oracle JDK with the help of the following command line:

                      [root@devwithus ~]$ apt install oracle-java11-installer-local

The installer will excerpt the JDK package and install it for us. Cool, right?

Conclusion

In this quick tutorial, we investigated how to install Java JDK on Windows 10 and Mac.

Along the manner, we besides saw how to install and set up Oracle JDK on Ubuntu.