How to install openjdk on windows - Доктор Windows - ваш надежный помощник

OpenJDK 11

Abstract

OpenJDK 11 for Windows is a Red Hat offering on the Microsoft Windows platform. The Installing and using OpenJDK 11 for Windows guide provides an overview of this product and explains how to install the software and start using it.

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Prerequisites

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Procedure

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Chapter 1. OpenJDK 11 for Windows installation options

OpenJDK 11 for Windows can be installed using an archive or through a graphical user interface using an MSI-based installer.

Depending on your circumstance, use one of the following installation methods:

Installing OpenJDK with the archive
Installing OpenJDK with the MSI installer

Chapter 2. Installing OpenJDK 11 for Windows with the archive

This procedure describes how to manually install OpenJDK 11 for Windows using the archive.

Procedure

Download the archive of OpenJDK 11 for Windows.
Extract the contents of an archive to a directory of your choice.

Extracting the contents of an archive to a directory path that does not contain spaces is recommended.
Update the PATH as below:
1. Add the bin directory contained in your OpenJDK 11 for Windows installation path to the %PATH% environment variable:
```
C:> setx /m PATH "%PATH%;C:Progra~1RedHatjava-11-openjdk-11.0.1.13-1bin"
```
  If the path contains spaces, use the shortened path name.
2. Restart Command Prompt to reload the environment variables.

Verify the OpenJDK 11 for Windows is successfully installed, run java -version command in a command prompt and you must get the following output:

openjdk version "11.0.3-redhat" 2019-04-16 LTS
OpenJDK Runtime Environment 18.9 (build 11.0.3-redhat+7-LTS)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.3-redhat+7-LTS, mixed mode)

The %JAVA_HOME% environment variable must also be set to use some developer tools. Set the %JAVA_HOME% environment variable as follows:
1. Open Command Prompt as an administrator.
2. Set the value of the environment variable to your OpenJDK 11 for Windows installation path:
```
C:> setx /m JAVA_HOME "C:Progra~1RedHatjava-11-openjdk-11.0.1.13-1"
```
  If the path contains spaces, use the shortened path name.
3. Restart Command Prompt to reload the environment variables.

Chapter 3. Updating OpenJDK 11 for Windows using the archive

OpenJDK 11 for Windows can be manually update using the archive.

Procedure

Download the archive of OpenJDK 11.
Extract the contents of an archive to a directory of your choice.

Extracting the contents of an archive to a directory path that does not contain spaces is recommended.
On Command Prompt, update JAVA_HOME environment variable as follows:
1. Open Command Prompt as an administrator.
2. Set the value of the environment variable to your OpenJDK 11 for Windows installation path:
```
C:> setx /m JAVA_HOME "C:Progra~1RedHatjava-11-openjdk-11.0.1.13-1"
```
  If the path contains spaces, use the shortened path name.
3. Restart Command Prompt to reload the environment variables.
Set the value of PATH variable if it is not set already:
```
  C:> setx -m PATH "%PATH%;%JAVA_HOME%bin";
```
Restart Command Prompt to reload the environment variables.

Verify that java -version works without supplying the full path.

C:> java -version
openjdk version "11.0.3" 2019-04-16 LTS
OpenJDK Runtime Environment (build 11.0.3+7-LTS)
OpenJDK 64-bit Server VM (build 11.0.3+7-LTS, mixed mode)

Chapter 4. Installing OpenJDK with the MSI installer

This procedure describes how to install OpenJDK 11 for Windows using the MSI-based installer.

Procedure

Download the MSI-based installer of OpenJDK 11 for Windows.
Run the installer for OpenJDK 11 for Windows.
Click Next on the welcome screen.
Check I accept the terms in license agreement, then click Next.
Click Next.
Accept the defaults or review the optional properties.
Click Install.
Click Yes on the Do you want to allow this app to make changes on your device?.

Verify the OpenJDK 11 for Windows is successfully installed, run java -version command in the command prompt and you must get the following output:

openjdk version "11.0.3-redhat" 2019-04-16 LTS
OpenJDK Runtime Environment 18.9 (build 11.0.3-redhat+7-LTS)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.3-redhat+7-LTS, mixed mode)

Chapter 5. OpenJDK MSI installer components

(Optional) Set the following OpenJDK 11 for Windows MSI-based installer components:

jdk

Java Development Kit (JDK) files.

jdk-registry-standard

Registry keys:

HKLMSoftwareJavaSoftJDK<version>, entries:
    JavaHome: <INSTALLDIR>
    RuntimeLib: <INSTALLDIR>binserverjvm.dll

HKLMSoftwareJavaSoftJDK, entries:
    CurrentVersion: <version>

jdk_env_path

Appends <INSTALLDIR>bin to the system %PATH% environment variable.

jdk_env_java_home

Sets <INSTALLDIR> to the system %JAVA_HOME% environment variable.

jdk_env_vendor_java_home

Sets <INSTALLDIR> to the system %REDHAT_JAVA_HOME% environment variable.

jdk_registry_jar

Association for JAR files. Launch JAR files with the OpenJDK context menu.

jmc

JDK Mission Control files, installed into <INSTALLDIR>missioncontrol.

jmc_env

Appends <INSTALLDIR>missioncontrol to the system %PATH% environment variable.

Appendix A. MSI-based installer properties

The OpenJDK 11 for Windows MSI-based installer includes the JDK Files component and the following optional properties:

Table A.1. OpenJDK 11 for Windows MSI-based installer properties

Property	Description	Default value
OpenJDK Runtime — Windows Registry	The following registry keys are set HKLMSoftwareJavaSoftJDK<version>, entries: JavaHome: <INSTALLDIR> RuntimeLib: <INSTALLDIR>binserverjvm.dll HKLMSoftwareJavaSoftJDK, entries: CurrentVersion: <version>	Yes
OpenJDK Runtime — Path Variable	Adds the Runtime to the Path variable so it is available from the command line.	Yes
OpenJDK Runtime — JAVA_HOME System Variable	JAVA_HOME is used by some programs to find the Java runtime.	No
OpenJDK Runtime — REDHAT_JAVA_HOME System Variable	REDHAT_JAVA_HOME can be used by some programs to find the Red Hat OpenJDK runtime.	No
OpenJDK Runtime — Jar Files Association	This enables Jar files to be run from within Windows Explorer.	No
Mission Control — Files	Contains files that are installed in the <installdir>missioncontrol directory.	No
Mission Control — Path Variable	Appends <installdir>missioncontrol to the system PATH environment variable.	No

Revised on 2021-10-25 12:30:57 UTC

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Источник

In the past, Oracle used to publish an executable installers for Windows that would:

Unpack files
Add registry keys indicating the installed version and path
Add the JRE to the system PATH
Register an uninstaller with Windows.

As of Java 11, the Oracle’s free version of Java (Oracle OpenJDK) doesn’t seem to include an installer. It is just a zip file containing the binaries.

How are we supposed to install OpenJDK 11 on Windows seeing as the aforementioned integrations are no longer there? Aren’t they necessary?

asked Sep 26, 2018 at 7:01

GiliGili

84.3k94 gold badges382 silver badges680 bronze badges

Extract the zip file into a folder, e.g. C:Program FilesJava and it will create a jdk-11 folder (where the bin folder is a direct sub-folder). You may need Administrator privileges to extract the zip file to this location.
Set a PATH:
- Select Control Panel and then System.
- Click Advanced and then Environment Variables.
- Add the location of the bin folder of the JDK installation to the PATH variable in System Variables.
- The following is a typical value for the PATH variable: C:WINDOWSsystem32;C:WINDOWS;"C:Program FilesJavajdk-11bin"
Set JAVA_HOME:
- Under System Variables, click New.
- Enter the variable name as JAVA_HOME.
- Enter the variable value as the installation path of the JDK (without the bin sub-folder).
- Click OK.
- Click Apply Changes.
Configure the JDK in your IDE (e.g. IntelliJ or Eclipse).

You are set.

To see if it worked, open up the Command Prompt and type java -version and see if it prints your newly installed JDK.

If you want to uninstall — just undo the above steps.

Note: You can also point JAVA_HOME to the folder of your JDK installations and then set the PATH variable to %JAVA_HOME%bin. So when you want to change the JDK you change only the JAVA_HOME variable and leave PATH as it is.

Georg Schölly

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answered Sep 27, 2018 at 6:51

Lior Bar-OnLior Bar-On

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Java 17 (LTS) and up

For Java 17 and up, you can use the Eclipse Adoptium website. According to their about section, the Eclipse Adoptium project is the continuation of the original AdoptOpenJDK mission.

Java 11 (LTS), Java 8 — 16

For Java 11 (8 through 16), you can use AdoptOpenJDK, a website hosted by the java community. You can find .msi installers for OpenJDK 8 through 16 there, which will perform all the things listed in the question (Unpacking, registry keys, PATH variable updating (and JAVA_HOME), uninstaller…).

answered May 27, 2019 at 13:47

PimgdPimgd

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Use the Chocolatey packet manager. It’s a command-line tool similar to npm. Once you have installed it, use

choco install openjdk --version=11.0

in an elevated command prompt to install OpenJDK 11 (leave out the --version parameter to install the latest version).

To update an installed version to the latest version, type

choco upgrade openjdk

Pretty simple to use and especially helpful to upgrade to the latest version. No manual fiddling with path environment variables.

answered Jun 18, 2019 at 12:34

TobiasTobias

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From the comment by @ZhekaKozlov: ojdkbuild has OpenJDK builds (currently 8 and 11) for Windows (zip and msi).

You can use Amazon Corretto. It is free to use multiplatform, production-ready distribution of the OpenJDK. It comes with long-term support that will include performance enhancements and security fixes. Check the installation instructions here.

You can also check Zulu from Azul.

One more thing I like to highlight here is both Amazon Corretto and Zulu are TCK Compliant. You can see the OpenJDK builds comparison here and here.

answered Apr 27, 2020 at 17:39

SwapnilSwapnil

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https://www.openlogic.com/openjdk-downloads allowed me to pick a 32-bit version of OpenJDK8 (don’t ask — Arduino IDE doesn’t compile with 11), I think they just wrap around AdoptOpenJDK MSIs but I couldn’t find 32-bit distros on AdoptOpenJDK.

answered Mar 26, 2021 at 19:06

David AirapetyanDavid Airapetyan

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In addition to the above answers, it is worth noting that you have to move your JDK Path entry to the top of the Path

answered May 12, 2022 at 17:10

PrincePrince

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Here is the complete answer. first of all you have to install the Chocolatey. to install Chocolatey run powershell as administrator and run the following command

Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))

after this run open cmd as administrator and run this command

choco install -y openjdk11

it will install the openjdk to the following location

C:Program FilesEclipse Adoptiumjdk-11.0.16.101-hotspot

finllay set your JAVA_HOME TO

C:Program FilesEclipse Adoptiumjdk-11.0.16.101-hotspot

and cheers

answered Sep 28, 2022 at 12:44

Engr.Aftab UfaqEngr.Aftab Ufaq

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WinGet is now available on Windows 10+ to install the Microsoft Build of OpenJDK on your machine. See details and access the downloads page at https://aka.ms/msopenjdk/ where Zip files and instructions.

answered Sep 29, 2022 at 6:17

d3r3kkd3r3kk

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Scoop installs programs you know and love, from the command line with a minimal amount of friction.

Install scoop
Add java scoop bucket add java
Install OpenJDK scoop.cmd install openjdk17

answered Jan 2 at 14:06

jfkjfk

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Источник

OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE).

OpenJDK 11 for Windows provides a distribution of OpenJDK that follows the Red Hat Enterprise Linux distribution of OpenJDK as closely as possible on the Microsoft Windows platform.
Windows builds use Red Hat Enterprise Linux RPM sources and apply all of the relevant RPM patches.

OpenJDK 11 for Windows includes OpenJDK, fonts, timezone data, and CA certificates from Red Hat Enterprise Linux.

1. Installing OpenJDK on Windows

1.1. Installing OpenJDK using the zip bundle

The easiest way to install the JDK on Windows is to unarchive the zip via the command prompt.

Note	Extracting the contents of the zip bundle to a directory path that does not contain spaces is recommended. This is important as many scripts that reference the `JAVA_HOME` environment variable may not extract the path correctly if their is a space present.

Procedure

Download the zip bundle of OpenJDK 11 for Windows.
Extract the contents of the zip bundle to a directory of your choice. See the note and caution above about spaces in the install path.

Update the PATH as below:

C:> setx /m PATH "%PATH%;<YOUR_INSTALL_PATH>bin"

Note	The above command only works if you start the command prompt with `Run as administrator`. /m updates the value as a system wide setting, instead of the default local environment. You have to restart the command prompt to check the setting by typing `path`.

Verify the OpenJDK 11 for Windows is installed by running: java -version in a newly opened command prompt and you should see the following:

java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
or
openjdk version "1.8.0_212-2-redhat"
OpenJDK Runtime Environment (build 1.8.0_212-2-redhat-b04)
OpenJDK 64-Bit Server VM (build 25.212-b04, mixed mode)
or
openjdk version "11.0.3-redhat" 2019-04-16 LTS
OpenJDK Runtime Environment 18.9 (build 11.0.3-redhat+7-LTS)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.3-redhat+7-LTS, mixed mode)

The %JAVA_HOME% environment variable must also be set to use some developer tools.

Set the %JAVA_HOME% environment variable as
```
C:> setx /m JAVA_HOME "<YOUR_INSTALL_PATH>"
```
Note

JAVA_HOME will not work if the bin directory is appended to your installation path.

After restarting the command prompt, you can view your setting by typing echo %JAVA_HOME%.
Open Command Prompt as an administrator.
Set the value of the environment variable to your OpenJDK installation path:
```
C:> setx /m JAVA_HOME "C:Progra~1RedHatjava-11-openjdk-11.0.1.13-1"
```
If the path contains spaces, use the shortened path name.
Restart Command Prompt to reload the environment variables.

1.2. Installing OpenJDK with the MSI Installer

The simplest way to install OpenJDK on Microsoft Windows.

Procedure

Download the MSI-based installer for OpenJDK 11 for Windows.
Run the installer for OpenJDK 11 for Windows.
Click Next on the Welcome Screen
Check I accept the terms in the License Agreement, then click Next
Click Next and accept the defaults, review the optional properties below if you wish to make changes.
Click Install
Click Yes on, «Do you want to allow this app to make changes to your device?».

Verify the OpenJDK 11 for Windows is installed by running: java -version in a newly opened Command Prompt and you should see the following:

java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
or
openjdk version "1.8.0_212-2-redhat"
OpenJDK Runtime Environment (build 1.8.0_212-2-redhat-b04)
OpenJDK 64-Bit Server VM (build 25.212-b04, mixed mode)
or
openjdk version "11.0.3-redhat" 2019-04-16 LTS
OpenJDK Runtime Environment 18.9 (build 11.0.3-redhat+7-LTS)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.3-redhat+7-LTS, mixed mode)

(Optional)

Select the desired extra environment settings if needed as described below

The OpenJDK 11 for Windows MSI-based installer includes the following components and sets the following properties:

Components

JDK Files: Java Development Kit (JDK) OpenJDK 11 for Windows files.

Properties

Setting	Default	JDK 8	JDK 11	Description
OpenJDK Runtime — Windows Registry	Yes	Yes	Yes	The following registry keys are set HKLMSoftwareJavaSoftJDK<version>, entries: JavaHome: <INSTALLDIR> RuntimeLib: <INSTALLDIR>binserverjvm.dll HKLMSoftwareJavaSoftJDK, entries: CurrentVersion: <version>
OpenJDK Runtime — Path Variable	Yes	Yes	Yes	Adds the Runtime to the Path variable so it is available from the command line.
OpenJDK Runtime — JAVA_HOME System Variable	No	Yes	Yes	JAVA_HOME is used by some programs to find the Java runtime.
OpenJDK Runtime — REDHAT_JAVA_HOME System Variable	No	Yes	Yes	REDHAT_JAVA_HOME will be used in the future for Mission Control.
OpenJDK Runtime — Jar Files Association	No	Yes	Yes	This enables Jar files to be run from within Windows Explorer.
Web Start (Beta) — JNLP File Association	No	Yes	No	Enables the launching of JNLP files downloaded from the web.
Web Start (Beta) — PATH Variable	No	Yes	No	Enables the launching of JNLP files downloaded from the web from the local file system.
Web Start (Beta) — Keep Settings and Cache	No	Yes	No	Keeps settings and caches on the local file system.
Mission Control — Path Variable	No	No	Yes	Adds Mission Control to the Path Variable so it is available from the command line.

2. Updating OpenJDK on Windows

2.1. Updating OpenJDK for Microsoft Windows using the zip bundle

OpenJDK 11 for Windows can be manually update using the zip bundle.

Procedure

Download the ZIP bundle of 11.0.3.
Extract the contents of the ZIP bundle to a directory of your choice.

Note

Extracting the contents of the zip bundle to a directory path that does not contain spaces is recommended.
On the command prompt, update JAVA_HOME environment variable as follows:
Open Command Prompt as an administrator.
Set the value of the environment variable to your OpenJDK installation path:
```
C:> setx /m JAVA_HOME "C:Progra~1RedHatjava-11-openjdk-11.0.1.13-1"
```
If the path contains spaces, use the shortened path name.
Restart Command Prompt to reload the environment variables.
Set the value of path variable if it is not set already:
```
C:> setx -m PATH "%PATH%;%JAVA_HOME%bin";
```
Restart the command prompt to reload the environment variables.

Verify that java -version works without supplying the full path.

C:> java -version
openjdk version "11.0.3" 2019-04-16 LTS
OpenJDK Runtime Environment (build 11.0.3+7-LTS)
OpenJDK 64-bit Server VM (build 11.0.3+7-LTS, mixed mode)

3. Configuring OpenJDK for Windows

3.1. Selecting a specific JDK from the installed versions for an application

You can select a specific JDK from the installed versions on Microsoft Windows for an application.

Prerequisites

More than one JDK is already installed on the system.

Procedure

Log in as a Windows system administrator.
On the command line, set the prompt to C:/.
Enter dir /b /s java.exe to list all of the installed JDKs on the system.
Set the value of the environment variable to your JDK (or JRE) installation path:
```
setx -m JAVA_HOME "Path to Java"
```
If the path contains spaces, use the shortened path name.
Restart the command prompt to reload the environment variables.
Retrieve the value of the path variable:
Set the value of path variable:
```
setx -m PATH "%PATH%;%JAVA_HOME%bin";
```

3.2. Setting up JDK Mission Control for Windows

This procedure describes how to install and set up JDK Mission Control for Microsoft Windows.

Prerequisites

Installation of OpenJDK 11 for Microsoft Windows.

Procedure

Unarchive the zip
In the missioncontrol directory, open the JMC client executable file.
On the command line, start the JMC Client by entering jmc or the the full path to the JMC executable.
```
JAVA_HOMEmissioncontroljmc.exe
```
On the JMC Client screen, create a new connection from the File Menu, choose your JVM, and start JMX console.
The result should give you an overview page with Processors, Memory consumption, Java heap use, JVM CPU usage, etc.

3.3. Configuring OpenJDK to run with customized heap size

OpenJDK 11 for Windows can be configured to use a customized heap size.

Prequisites

Installed Java Runtime

Procedure

Run the application by adding maximum heap size option to your java command line. For example to set the maximum heap size to 100 megabytes use the -Xmx100m option.
```
$ java -Xmx100m <your-main-class>
```

Revised on 2019-06-04 11:00:20 EDT

Источник

In a nutshell, there are two coexisting branches of Java: the proprietary, closed-source Oracle Java and the community-maintained open-source OpenJDK.

OpenJDK is licensed under GPL-2.0, and it consists of a Java Virtual Machine and a java-bytecode compiler. Since this is the easier and cheaper way, it’s the one we’re going to be using in this tutorial.

Here, you’ll learn how to install OpenJDK on Windows, Mac, and Linux in a few different ways.

Very Easy Semi-Automatic Mode – for Windows and macOS

Keep in mind that this will require administrator access.

If you are in a hurry and just want a plug-and-play install with an easy uninstaller and automatic setup, that’s fine – I won’t judge.

Head over to the community-driven, Eclipse Foundation-supported Adopt Open JDK website to get the link for your installer (if you are in doubt, just go with OpenJDK 11 LTS on HotSpot JVM).

Also, Eclipse is the main open-source Java IDE in case you didn’t know.

You’ll be redirected to a page with a list of install links. Look for your OS, choose the packaged installer (.msi for Windows or .pkg for macOS) and download it. Remember to install ALL features, as it won’t work out of the box if you don’t allow the installer to set JAVA_HOME. Then run it and voilà! You’re done.

Very Easy Semi-Automatic Mode – for Linux

This method also needs admin access, of course.

First, remember to run this command:

sudo apt-get update

Your OS will very likely have its own OpenJDK package available in the repository manager.

For Ubuntu/Debian, the package names are usually named like openjdk-<version_number>-jre-headless. For example:

sudo apt install openjdk-8-jre-headless # installs for java 8
or
sudo apt install openjdk-13-jre-headless # installs for java 13

That’s it, the open-source community saves the day again.

Still Pretty Easy, Mostly Manual Mode – for Windows, macOS, and Linux

You can get your compressed OpenJDK from a number of different vendors such as Microsoft, Red Hat, Intel or anyone offering their fork of OpenJDK. They might even offer their own installer file. But to keep it simple we’re using Adopt Open JDK once again.

Select your preferred version and JVM ( OpenJDK 11 LTS on HotSpot JVM if you are unsure) and download the compressed JDK.

Why would you choose this option over the much easier methods just described above? Maybe you don’t have administrator rights on your current machine or maybe you are setting up your own strategy to manage multiple Java versions. I don’t know, but it has its use cases.

Steps for Windows

Store the extracted files in the Directory Tree

First, extract the zip file into a folder (C:Program FilesOpenJDK would be the educated choice. Note that OpenJDK was manually added). It will create the folder for the JDK installation, with bin as one of its sub-directories.

You will need Administrator privileges to extract the zip file to this location.

If you cannot use Administrator rights for any reason, extract it to a location under your user space, such as C:Users%YOUR_USERNAME%OpenJDK.

2. Open Environment Variables

Open the Control Panel > System & Security > System > Advanced System Settings (it’ll be under ‘Device Specifications in Windows 10+).

In the System Properties window, select the Advanced tab, then Environment Variables.

3. Set JAVA_HOME:

Under System Variables, click New. Enter the variable name as JAVA_HOME. Enter the variable value as the installation path of the JDK (appending the bin sub-folder at the end of the path). Mine was C:Program FilesOpenJDKOpenJDK11U-jdk_x64_windows_hotspot_11.0.15_10jdk-11.0.15+10bin.

Click OK and Apply Changes. If you are doing this process as a non-admin, choose User Variables instead.

4. Add the binary executables to PATH:

Stay in the Environment Variables window. Click on the variable named Path (either for System or User, depending on your choice in the last section).

You’ll see a list of stuff. These are the executables you have access from your CLI (like Windows Terminal, Command Prompt, or Poweshell).

Click on ‘New’ at the top-right corner and add %JAVA_HOME% as a variable.

Click OK and Apply Changes.

5. Test Installation

Open a Command Line Interface. Type java -version. If the output was the version, all was OK, congrats!

If it wasn’t, restart your computer and try again. If it still isn’t working, double-check this tutorial, try to read your JAVA_HOME path, and see if it points to the the bin folder within the downloaded folder’s path.

Steps for Linux/macOS:

Store the extracted files in the Directory Tree:

Then, extract the compressed file appropriate to your OS. In case you can’t or don’t want to use admin permissions, extract it somewhere in your user space (like ~/.openjdk).

If you want a more conventional location, extract it to /usr/local/, which is where software manually installed by the user conventionally goes in POSIX systems.

My command (for Linux) was this one: sudo tar -xf OpenJDK11U-jdk_x64_linux_hotspot_11.0.16.1_1.tar.gz -C /usr/local.

2. Set JAVA_HOME and add it to PATH:

Set JAVA_HOME to where you extracted your OpenJDK installation. Point it to the OpenJDK directory, not to its /bin subfolder, as JAVA_HOME will not only be used to determine the executables’ location.

This should be located in your shell initialization file. For example, let’s suppose These are the two last lines of my ~/.zshrc file:

   export JAVA_HOME="/usr/local/jdk-11.0.16.1+1"
   export PATH="$JAVA_HOME/bin:$PATH"

3. Verify Installation

Now, refresh your shell by either sourcing the init file or opening another tab/window.

You can check installation with java -version. If no errors are displayed, congratulations! Time to do some Java’ing.

Wrapping Up

And that’s it! Now you should have OpenJDK installed and ready to use on your machine. Thanks for reading.

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Details: Written by; Last Updated on 15 April 2022 | Print Email

OpenJDK 18 is an open-source distribution of Java SE Development Kit (JDK), released on March 22^nd 2022. JDK 18 is a feature release as of Java SE’s 6-month release cadence — it’s not a LTS (Long Term Support) release.

In this post, I’d like to guide you how to download and install OpenJDK 18 on Windows operating system.

1. Download binary distribution of OpenJDK 18

Click this link to visit the official download page of OpenJDK 18. Then click on the Windows/x64 zip link to download the binary distribution of OpenJDK 18, as shown below:

You’ll get the file openjdk-18_windows-x64_bin.zip downloaded. But before installation, you should verify the integrity of this file. Open a new command prompt window, change the current directory to the one containing the file. Then type the following command:

certutil -hashfile openjdk-18_windows-x64_bin.zip sha256

Compare the returned SHA256 checksum against the one published in the sha256 link (next to the zip link). If they are the same, you can proceed to install OpenJDK 18 safely.

Extract the downloaded zip file into a separate directory, e.g. D:OpenJDK18. Then you need to update the system environment variables JAVA_HOME and PATH in the following way:

JAVA_HOME = D:OpenJDK18jdk-18

PATH = JAVA_HOMEbin + PATH

Open a new command prompt window with administrator privilege, and type the following commands:

setx -m JAVA_HOME «G:OpenJDK18jdk-18»

setx -m PATH «%JAVA_HOME%bin;%PATH%»;

Then open another command prompt to verify OpenJDK 18 installation. Type the java -version and javac -version commands:

If you see the result like this, that means you have successfully installed OpenJDK 18 on your Windows computer.

Learn more:

How to check Java version
Java SE versions history
How to set JAVA_HOME environment variable on Windows 10
How to set environment variables for Java using command line
How to write, compile and run a hello world Java program for beginners
What are JVM, JRE and JDK

About the Author:

Nam Ha Minh is certified Java programmer (SCJP and SCWCD). He started programming with Java in the time of Java 1.4 and has been falling in love with Java since then. Make friend with him on Facebook and watch his Java videos you YouTube.

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Open Java Development Kit (OpenJDK) is an open source implementation of the Java Standard Edition (Java SE) platform with contribution from Oracle and the open Java community. For more information, see OpenJDK.

Open JavaFX (OpenJFX) is an open source, next generation client application platform for desktop, mobile and embedded systems built on Java. For more information, see JavaFX.

Before JDK version 9, JavaFX libraries were included in the JDK distribution. Since JDK version 9, JavaFX (JFX) is provided as a separate package.

This document explains how to install the OpenJDK version 12 along with OpenJFX libraries for the following operating systems:

Windows
Linux
MacOS

Install OpenJDK

To install OpenJDK, you must download it as follow:

Download the OpenJDK version 12 from https://jdk.java.net/archive/.
Extract the .tar file. The jdk-12.0.2 folder appears.

Install OpenJDK for Windows

This section explains how to install the OpenJDK version 12 for Windows:

Go to Start > Control Panel > System and Security > System.
Click Advanced system settings. The System Properties window appears.
Click Environment Variables…. The Environment Variables window appears.
Click New… in the User variables for <user name> section.

Note If your JAVA_HOME variable is already created, select it and click Edit….
Enter JAVA_HOME in the variable name field and the JDK directory path, for example, C:UsersuserDesktopjdk-12.0.2, in the Variable value field.
Click OK. The Environment Variables window appears.
If you cannot find JAVA_HOME in System variables section, add the variable by repeating the 4, 5, and 6 steps.
Save and close the Environment Variables window.
Launch Command Prompt.
Run the following command to verify whether the OpenJDK version 12 is installed:
```
java -version
```

Install OpenJDK for Ubuntu

This section explains how to install the OpenJDK version 12 for Ubuntu:

Launch the Terminal application.
Run the following command in the terminal to set the JAVA_HOME as OpenJDK directory path, for example:
```
JAVA_HOME=/home/<username>/Desktop/openJDK/jdk-12.0.2/
```

Run the following commands in the terminal:

sudo update-alternatives --install /usr/bin/java java ${JAVA_HOME}/bin/java 20000
sudo update-alternatives --install /usr/bin/javac javac ${JAVA_HOME}/bin/javac 20000

Run the following command to get a list of JDK versions installed:
```
sudo update-alternatives --config java
```
Note If there are multiple JDK installed, select the required java version by entering the selection number.
Run the following command:
```
sudo update-alternatives --config javac
```
Note javac is for compilation. For more information on differences between java and javac, see https://docs.oracle.com.
Select the required javac version as mentioned above.
Run the following command to verify whether the OpenJDK version 12 is installed:
```
java -version
```

Install OpenJDK for MacOS

This section explains how to install the OpenJDK version 12 for macOS:

Copy the downloaded jdk folder to the Library/Java/JavaVirtualMachines location. This is the default location where all the JDKs are available. Use the following command to copy the JDK directory.
```
cp -aR <downloaded_jdk_path> /Library/Java/JavaVirtualMachines/
```
Launch Terminal application.
Run the following command to verify whether the OpenJDK version 12 is installed:
```
java -version
```
Note If the OpenJDK version 12 is not installed, add the export JAVA_HOME = /Library/Java/JavaVirtualMachines/jdk-12.jdk/Contents/Home command in the .profile or .bash_profile file.

Install OpenJFX

After installing OpenJDK, install the OpenJFX:

Download the OpenJFX version 11 from https://gluonhq.com/products/javafx.

Note Download the appropriate JavaFX product for your operating system.
Extract the downloaded zip file.
Copy all files in lib folder to lib folder of JAVA_HOME.
Note

On Ubuntu, run the following command:
```
cd javafx-sdk-11.0.1
sudo cp -arf lib/* ${JAVA_HOME}/lib/
```
Copy all files in bin folder to bin folder of JAVA_HOME.

Note This step is only required for Windows.

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