Is there any OpenJDK version available to Windows OS? From the OpenJDK home page (http://openjdk.java.net/) it redirects to Oracle Sun JRE for Windows machine.
Is there any existing OpenJDK available to Windows? If yes, where to get it? If not, do we have to build it by ourselves (see http://blogs.oracle.com/poonam/entry/building_openjdk_on_windows)
You can find the thoroughly tested OpenJDK releases provided by Oracle at http://jdk.java.net .
For example, ready to use builds of OpenJDK 10.0.2 from Oracle for 64-bit Linux, MacOS and Windows can be found at http://jdk.java.net/10/ .
I recently came across this site: https://adoptopenjdk.net/
Seems reliable to me. Haven't tried myself but surely will give it a try.
License:
License(s) Build scripts and other code to produce the binaries, the website and other build infrastructure are licensed under Apache License, Version 2.0. OpenJDK code itself is licensed under GPL v2 with Classpath Exception.
EDIT: I was also delighted to learn that AdoptOpenJDK MSI installer (JDK and JRE) now comes with IcedTeaWeb, which is a replacement for Oracle WebStart - simple installer with almost 'next-next-next-finish' and the JWS applications works like they used to.
You can go to AdoptOpenJDK to download your binaries for all platforms provided by a great community.
Only OpenJDK 7. OpenJDK6 is basically the same code base as SUN's version, that's why it redirects you to the official Oracle site.
An interesting alternative with long term support is Corretto. It was anounced by James Gosling on DevOXX recently. It is a no-cost, multiplatform, production-ready distribution of the Open Java Development Kit (OpenJDK). Corretto comes with long-term support that will include performance enhancements and security fixes. Currently it provides Java Versions 8 and 11 (12 soon) and you can download binaries for all major platforms
And the second interesting alternative is Dragonwell provided by Alibaba. It is a friendly fork but they want to upstream their changes into the openjdk repo regularily... They currently offer Java8 but the have interesting things like a backported Flight Recorder (from 11 to 8) ...
And thirdly as already mentioned by others the adoptOpenJDK initivative is also worth looking at.
OpenSCG maintains OpenJDK 6 installers for 32-bit Windows and other operating systems.
To configure it, create a JAVA_HOME environment variable and set it to C:\OpenSCG\openjdk-6.0.24 or whatever is the current version. Then add %JAVA_HOME%\bin; to the beginning of your PATH environment variable.
You can edit your environment variables by contextual clicking (My) Computer, selecting Properties, clicking Advanced system settings if you’re in Windows 7, clicking the Advanced tab and then clicking Environment Variables.
In case you are still looking for a Windows build of OpenJDK, Azul Systems launched the Zulu product line last fall. The Zulu distribution of OpenJDK is built and tested on Windows and Linux. We posted the OpenJDK 8 version this week, though OpenJDK 7 and 6 are both available too. The following URL leads to you free downloads, the Zulu community forum, and other details: http://www.azulsystems.com/products/zulu These are binary downloads, so you do not need to build OpenJDK from scratch to use them.
I can attest that building OpenJDK 6 for Windows was not a trivial exercise. Of the six different platforms we've built (OpenJDK6, OpenJDK7, and OpenJDK8, each for Windows and Linux) for x64 so far, the Windows OpenJDK6 build took by far the most effort to wring out items that didn't work on Windows, or would not pass the Technical Compatibility Kit test protocol for Java SE 6 "as is."
Disclaimer: I am the Product Manager for Zulu. You can review my Zulu release notices here: https://support.azulsystems.com/hc/communities/public/topics/200063190-Zulu-Releases I hope this helps.
Red Hat announces they will distribute an OpenJDK for Windows platform: http://developers.redhat.com/blog/2016/06/27/openjdk-now-available-for-windows/
EDITED (thx to CaseyB comment): there is no PRODUCTION support on Windows. From the documentation:
All Red Hat distributions of OpenJDK 8 on Windows are supported for development of applications that work in conjunction with JBoss Middleware, so that you have the convenience and confidence to develop and test in Windows or Linux-based environments and deploy your solution to a 100% compatible, fully supported, OpenJDK 8 on Red Hat Enterprise Linux.
For Java 12 onwards, official General-Availability (GA) and Early-Access (EA) Windows 64-bit builds of the OpenJDK (GPL2 + Classpath Exception) from Oracle are available as tar.gz/zip from the JDK website.
If you prefer an installer, there are several distributions. There is a public Google Doc and Blog post by the Java Champions community which lists the best-supported OpenJDK distributions. Currently, these are:
You may find OpenJDK 6 and 7 binaries for Windows in openjdk-unofficial-builds github project.
Update: OpenJDK 8 and 11 LTS binaries for Windows x86_64 can be found in ojdkbuild github project.
Disclaimer: I've built them myself.
Update (2019): OpenJDK Updates Project Builds for 8 and 11 are available now.
Found all the windows binaries here :
https://github.com/ojdkbuild/ojdkbuild
These Windows binaries are built to keep them as close as possible in behaviour to java-x-openjdk CentOS packages.
Source: Stackoverflow.com