To install the JDK on macOS: Download the JDK.dmg file, jdk-11.interim.update.patch-macosx-x64.dmg. Before the file can be downloaded, you must accept the license agreement. From either the browser Downloads window or from the file browser, double-click the.dmg file to start it. JavaFX 15 OpenJFX is an open source, next generation client application platform for desktop, mobile and embedded systems built on Java. It is a collaborative effort by many individuals and companies with the goal of producing a modern, efficient, and fully featured toolkit for developing rich client applications. OpenJDK 11 is the open source distribution of JDK 11, licensed under GNU General Public License version 2 (GPLv2). To download OpenJDK 11, you have to go to OpenJDK Archive download page. Then scroll down a little bit to find the version 11.0.2. OpenJDK is distributed in only zip or tar.gz file.

Need help installing OpenJDK 11 on MacOS? Click here to learn how in this simple, easy-to-follow tutorial with sample code!

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If you download the .tar.gz for OpenJDK 11 directly from http://jdk.java.net/11/, there’s no obvious installation instructions (at least that I could find) on the OpenJDK website or in the .gz file. If you’ve done any fiddling with different JDK versions on MacOS before, you’ve probably come across the ‘/usr/libexec/java_home’ utility, which composes a number of useful things relating to the JDK that you’re currently using in your PATH. Click here for my previous article about this utility and answers to this StackOverflow post, which includes one of the most extensive and useful guides to running different JDK versions on MacOS that I’ve seen.

/usr/libexec/java_home: This will show you where the current JDK home is, for example:

/usr/libexec/java_home -V: This lists all installed JDKs, which is shown below:

To switch between JDKs, use /usr/libexec/java_home -v version (e.g. 10):

Knowing that your available JDKs are installed to /Library/Java/JavaVirtualMachines/ by default, moving the contents of the downloaded OpenJDK 11 dir from inside the .gz file to the same location would make sense.

Once you’ve moved it there, java_home -V now shows the new JDK in place:

Updating my aliases to quickly switch versions in my .bash_profile, I now have:

Sourcing the .bash_profile (source .bash_profile) and then running each alias, now I’ve got OpenJDK 11 set up and ready to go!

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A Software Development Kit, or an SDK, is a collection of tools that you need to develop an application for a specific software framework. For example, to develop applications in Java, you need a Java SDK (JDK). SDKs contain binaries, source code for the binaries, and documentation for the source code. JDK builds also contain annotations.

Generally, SDKs are global. It means that one SDK can be used in multiple projects and modules. After you create a new project and define an SDK for it, you can configure modules in this project to inherit its SDK. You can also specify an SDK for each module individually. For more information, refer to Change module SDK.

Supported SDKs:

Define an SDK

To define an SDK means to let IntelliJ IDEA know in which folder on your computer the necessary SDK version is installed. This folder is called an SDK home directory.

Download Jdk 11 For Mac

Configure global SDKs

From the main menu, select File | Project Structure | Platform Settings | SDKs.
To add an SDK, click , select the necessary SDK and specify its home directory in the dialog that opens.
Only for JDKs: if you don't have the necessary JDK on your computer, select Download JDK. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.

Set up a project SDK

From the main menu, select File | Project Structure | Project Settings | Project.
If the necessary SDK is already defined in IntelliJ IDEA, select it from the Project SDK list.
If the SDK is installed on your computer, but not defined in the IDE, select Add SDK | 'SDK name', and specify the path to the SDK home directory.
Only for JDKs: If you don't have the necessary JDK on your computer, select Add SDK | Download JDK. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.

Set up a module SDK

From the main menu, select File | Project Structure | Project Settings | Modules.
Select the module for which you want to set an SDK and click Dependencies.
If the necessary SDK is already defined in IntelliJ IDEA, select it from the Module SDK list.
If the SDK is installed on your computer, but not defined in the IDE, select Add SDK | 'SDK name', and specify the path to the SDK home directory.
Only for JDKs: If you don't have the necessary JDK on your computer, select Add SDK | Download JDK. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.

If you want a module to inherit a project SDK, select the Project SDK option from the Module SDK list.

Java Development Kit (JDK)

To develop applications in IntelliJ IDEA, you need a Java SDK (JDK). A JDK is a software package that contains libraries, tools for developing and testing Java applications (development tools), and tools for running applications on the Java platform (Java Runtime Environment — JRE).

The JRE can be obtained separately from the JDK, but it's not suitable for application development, as it doesn't have essential components such as compilers and debuggers.

The bundled JRE is used for running the IDE itself, and it's not sufficient for developing Java applications. Before you start developing in Java, download and install a standalone JDK build.
Due to the changes in the Oracle Java License, you might not have the rights to use Oracle's Java SE for free. We recommend that you use one of the OpenJDK builds to avoid potential compliance failures.

In IntelliJ IDEA, you can download a JDK package right from the IDE, or you can manually download the necessary JDK distribution and define it in the IDE.

For a manual download, use any available distribution that you like, for example:

If you don't know which distribution to choose, and you don't have specific requirements that instruct you to use one of the existing distributions, use Oracle OpenJDK.

Set up the project JDK

From the main menu, select File | Project Structure | Project Settings | Project.
If the necessary JDK is already defined in IntelliJ IDEA, select it from the Project SDK list.
If the JDK is installed on your computer, but not defined in the IDE, select Add SDK | JDK, and specify the path to the JDK home directory (for example, /Library/Java/JavaVirtualMachines/jdk-12.0.1.jdk).
If you don't have the necessary JDK on your computer, select Add SDK | Download JDK. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.
Apply the changes and close the dialog.

If you build your project with Maven or Gradle, refer to Change the JDK version in a Maven project and Gradle