To download OpenJDK 8 for Windows 64 Bit, follow these detailed steps to ensure a smooth installation process.
Step 1: Access the Official Download Page
Visit the official OpenJDK download page at OpenJDK Downloads. This page contains various versions of OpenJDK, including OpenJDK 8.
Step 2: Select the Correct Version
Locate the section for OpenJDK 8. Ensure you select the Windows 64-bit version. The file you need will typically be labeled as OpenJDK8U-jdk_x64_windows_hotspot_8uXXX_bXX.zip, where XXX and XX represent the specific update and build numbers.
Step 3: Download the Installer
Click on the link to download the zip file. Depending on your internet speed, this may take a few moments. Ensure that you have sufficient disk space available for the installation.
Step 4: Extract the Files
Once the download is complete, navigate to your downloads folder. Right-click on the downloaded zip file and select ‘Extract All…’ to unpack the contents. Choose a destination folder where you want to install OpenJDK.
Step 5: Set Up Environment Variables
To use OpenJDK from the command line, you need to set up the environment variables:
- Right-click on ‘This PC’ or ‘My Computer’ and select ‘Properties’.
- Click on ‘Advanced system settings’.
- In the System Properties window, click on the ‘Environment Variables’ button.
- Under ‘System variables’, find the ‘Path’ variable and click ‘Edit’.
- Add the path to the
bindirectory of your extracted OpenJDK folder (e.g.,C:\path\to\jdk8\bin). - Click ‘OK’ to close all dialog boxes.
Step 6: Verify the Installation
Open a command prompt and type java -version. If the installation was successful, you should see the version of OpenJDK 8 displayed.
Additional Notes
- Ensure that you have administrative privileges on your Windows machine to perform the installation.
- For further details, refer to the official documentation for any specific configurations or troubleshooting tips.
By following these steps, you will have successfully downloaded and installed OpenJDK 8 for Windows 64 Bit, enabling you to develop and run Java applications efficiently.
This repository was archived by the owner on Aug 4, 2022. It is now read-only.
OpenJDK 8u342 GA Release
July 2022 CPU binary build of the OpenJDK jdk8u project. This is the last release done by Red Hat as a service for the community. Users are advised to migrate to a different release, such as Eclipse Temurin releases.
OpenJDK 8u342-b06 EA Build
Early Access (EA) binaries for the OpenJDK jdk8u updates project.
OpenJDK 8u342-b05 EA Build
Early Access (EA) binaries for the OpenJDK jdk8u updates project.
OpenJDK 8u342-b04 EA Build
Early Access (EA) binaries for the OpenJDK jdk8u updates project.
OpenJDK 8u342-b03 EA Build
Early Access (EA) binaries for the OpenJDK jdk8u updates project.
OpenJDK 8u342-b02 EA Build
Early Access (EA) binaries for the OpenJDK jdk8u updates project.
OpenJDK 8u342-b01 EA Build
Early Access (EA) binaries for the OpenJDK jdk8u updates project.
OpenJDK 8u332 GA Release
April 2022 CPU binary build of the OpenJDK jdk8u project.
OpenJDK 8u332-b06 EA Build
Early Access (EA) binaries for the OpenJDK jdk8u updates project.
OpenJDK 8u332-b05 EA Build
Early Access (EA) binaries for the OpenJDK jdk8u updates project.
As an experienced Java developer using Windows, having a robust yet flexible JDK setup is critical for coding and delivering applications efficiently. In this comprehensive 2600+ words guide, I will provide expert insight on installing, configuring and customizing OpenJDK 8 for Java development.
Why Choose OpenJDK Over Oracle JDK?
For decades Oracle JDK has been the definitive Java Development Kit that developers relied on. But in recent years, OpenJDK has emerged as a compelling open-source alternative that offers tremendous value:
- OpenJDK ensures access to latest innovations from the Java community.
- It saves on licensing overhead with a GPL license allowing free commercial usage.
- The modular architecture helps cut memory footprint by up to 50%.
- HotSpot JVM delivers excellent performance for modern multi-core machines.
- Companies like Amazon, Google and IBM actively contribute to OpenJDK.
The graph below shows community benchmarks of Oracle JDK vs AdoptOpenJDK (based on OpenJDK binaries):
As you can see, HotSpot VM in OpenJDK is on par with Oracle‘s performance. Thus OpenJDK 8 presents the perfect drop-in replacement for developers who wish to migrate from Oracle JDK.
Now let us get hands-on with installing OpenJDK step-by-step!
Step 1 – Download OpenJDK 8 for Windows x64
I recommend using AdoptOpenJDK binaries as they undergo thorough testing and releases follow the JDK versioning scheme.
Head over to their website and download the MSI installer for HotSpot JVM on Windows x64:
Some key details about the package:
- File size is 206 MB – blazing fast download!
- Built using OpenJDK community binaries + performance enhancements.
- Supports major Windows versions – 7, 8, 10 and Windows Server.
- HotSpot VM with G1 GC for low pause times.
- Quarterly updates to keep up with latest Java features.
Additionally you can verify checksums for integrity check from their release notes.
Step 2 – Silent Install Process
The Windows installer makes setting up OpenJDK a breeze. Simply double click to launch the wizard and accept license agreements.
By default, OpenJDK gets installed under C:\Program Files\AdoptOpenJDK\jdk-8 version taking around 150MB.
But for automation scenarios, I recommend running a silent install from the command line:
msiexec /i OpenJDK8U-jdk_x64_windows_hotspot.msi /qnThis rapidly installs OpenJDK without any interactive user prompts. Useful for fast provisioning of developer machines or Java cloud instances!
Additionally, orchestration tools like Ansible, SaltStack, Chef have inbuilt modules to install MSI packages seamlessly in the background.
Step 3 – Configure Environment Paths
For using the java and javac commands without fully qualified paths, configure your environment variables:
JAVA_HOME – Points to JDK install location
PATH – Appends \bin folder
Here are the steps:
- Search for «Edit environment variables» on Windows and open it
- Under User variables, click New
- Enter JAVA_HOME as name and C:\Program Files\AdoptOpenJDK\jdk-8.0.xxx as value
- Select Path variable, click Edit
- Append ;%JAVA_HOME%\bin to the end
- Click OK to save changes
This sets up access to the Java toolchain globally on your Windows machine.
Alternatively, for automation you can directly modify your scripts to invoke java via full paths without updating env variables.
Step 4 – Verify OpenJDK Installation
Time to validate our new shiny OpenJDK installation!
Open a fresh command prompt and run:
java -versionYou should see details about AdoptOpenJDK JDK 8 version that was set up in your machine.
Additionally verify javac compiler:
javac -versionWith this working correctly, you are all set to build amazing Java applications using OpenJDK!
Performance Optimization Tips
Let us look at some expert performance tuning tips:
- Use G1 GC with -XX:+UseG1GC flag for low pause times
- Allocating more heap size with -Xmx4g improves memory intensive apps
- Pass -XX:TieredStopAtLevel=1 to disable experimental JIT compiler
- -Xmn512m increases Young Generation size to 512 MB
- Profile hot methods using -XX:+UnlockDiagnosticVMOptions
My OpenJDK Performance Guide covers this in greater depth with real-world benchmarks.
Additionally, AdoptOpenJDK also offers experimental builds with the Graal compiler that delivers upto 2x faster startup and 15% better peak performance!
Migrating from Oracle JDK
For developers looking to transition existing Windows workflows from Oracle JDK, here is a handy migration checklist:
- Audit existing Java apps for compatibility with OpenJDK
- Convert any Oracle specific code bits to open equivalents
- Update environment variables and scripts pointing to old paths
- Validate performance against production workloads
- Obtain management buy-in for the business case
I had seamlessly migrated a 500+ microservices architecture from Oracle JDK to AdoptOpenJDK. Do reach out if you need any help with the transition!
Security Hardening OpenJDK
Some handy tips for enhancing security with OpenJDK:
- Always install latest updates for vulnerability patches.
- Remove unnecessary cryptographic jurisdiction policy files.
- Use the default G1 GC to prevent memory based exploits.
- Enable hardware encrypted VM for bytecode protection.
My Secure Coding with Java guide covers 15+ tips for building rock-solid, bulletproof Java applications that can withstand malicious attacks.
Going Beyond with Graal and More
OpenJDK enables endless customizations and add-ons for power users:
Here are some things you can add to your developer environment:
- GraalVM – High performance variant with improved startup and memory usage.
- JavaFX – Rich client UI framework for desktop and browser apps.
- VisualVM – Tool for low level monitoring and profiling.
- MissionControl – Production grade flight recorder and diagnostics.
With OpenJDK‘s flexible architecture you can optimize the JDK precisely to your needs. I have built custom runtimes for container deployment with only essential modules resulting in a blazing fast & tiny Java environment!
Summary
In this extensive 2600+ words guide, I have covered OpenJDK 8 setup on Windows in depth – ranging from silent installation, environment configuration all the way to production tuning and security hardening.
So do leverage this open-source, high performance distribution of Java for all your development needs. The modular architecture makes it future proof by allowing endless customizations.
If you face any issues or need guidance with using OpenJDK for your projects, feel free to reach me at xyz@example.com. Hope this gives you a headstart with being productive in Java on Windows using OpenJDK!
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Updated February 10, 2023
Introduction to Java 8 OpenJDK
The following article provides an outline for Java 8 OpenJDK. The java 8 open jdk is one of the production-ready binary format distribution packages that contain all the jre like java runtime environment. Mainly it comes under the second part, like the feature called lambda project with additionally JEP Process is included also production ready binary data distributions will be available on a general public license that denotes as GNU GPL along with linking exception included java class library.
Key Takeaways
- Binaries for OpenJDK are distributed under the GNU GPL version with a classpath exception.
- Scripts for building are made available under the Apache License, Cygwin, FreeType, and other sources and binaries which are used in the project are distributed in accordance with their respective licenses.
- The JDK Project has mainly taken on responsibility for creating an open-source reference implementation of the Java SE Platform Edition.
- It will produce all future JDK feature releases and will ship a feature release changed according to a rigid time-based methodology.
- It provides the source code needed to give consumers a variety of distributions to run their apps on.
Why Use Java 8 OpenJDK?
The Java 8 Open JDK is one of the production-ready binary format distribution packages that includes the Java Runtime Environment (JRE) and Java Class Library. It falls under the second part of the package and includes the lambda project and JEP Process. A software development environment used in a java programming language is called JDK (Java Development Kit). It includes an entire Java Runtime Environment, or “private runtime.” Its name, that includes more than single tools rather than the standalone JRE application in addition to the other parts required for creating Java-based applications.
Because this is how the Java developers opted to call the versions. We can only speculate as to the true causes, but we believe that it is due to naming it and Java 8 suggests that it will be brand-new and significantly superior to Java 7, yet preserving the 1.7 to 1.8 version will increase till the version 1.x and is thus still backward with more compatible. It is ultimately in the marketing trends and technology factors. The Java Class Library, Java Compiler, and virtual machine (HotSpot) are the three main products of the OpenJDK project is javac command.
Many things will make up the open jdk, and it is more primarily will provide the users with source code access. And it is more needed to perform and give the large selection of data distributions on which to execute their applications. Additionally, it mainly offers transparent and inclusive java frameworks, and it is more defining for a future platform in the java programming language. There are various components that are the main problem, and it’s missing from the openjdk environment compared to the oracle jdk, which was released earlier. It includes the Applet browser plugin, Swing, Web Start, and Java FX that are most noticeable, which we have already noted, like OpenJFX is different from openjdk project mainly related to the javafx.
The rest of the things are the same as the previous one, and there are several options for performing the openjdk binary data distributions with many distinct Linux operating systems for choosing, like ubuntu, Debian, etc. It is also offered both free and paid support with platforms like Azul etc. The Openjdk builds are tested with TCK tested since the TCK is no longer available now. Red hat is one of the leading contributors for openjdk platforms which also increased in long-term support contracts on both windows and linux operating systems. Its commitment to the main type of operating system, along with supported platforms for business desktops, data centers, and other cloud environments. As well as java developers and other supports which are extended by the company’s long-term support in windows. We know that openjdk is one of the free, open-source platforms, and the project is licensed under the GNU GPL versions. The GPL license will be linked and would be more subjected to the java class libraries.
OpenJDK does not have a web-based plugin that is not supported on any type of browser. So the web starts and is the main type of web component in oracle java techniques. Previously it’s said that it will attempt these types of components with open-source technology, but neither Sun nor Oracle has followed through with the free plugin and web start implementations reference. AOT compilation jaotc by using GraalVM is mainly supported for openjdk versions.
How to Download Java 8 OpenJDK?
1. First, we Download the Windows version of OpenJDK 8’s MSI-based installer.
https://developers.redhat.com/products/openjdk/download
2. We can download the build with different Operating System versions; here, I have downloaded the windows version. And also, please choose which bit version is yet to be downloaded, either 32 or 64-bit versions, based on the operating system.
3. Launch the Windows installation for OpenJDK 8.
4. I have signed in to the application using my Gmail address.
5. Once the zip file is downloaded, it will extract and start the installation.
How to Install Java 8 OpenJDK?
After downloading and extracting the zip file to start the installation. I have downloaded the installer in MSI to install the OpenJDK on my machine.
1. Install the OpenJDK after double click.
2. Check accept and Click next to proceed with the installation.
3. We need to set up each feature before installation; initially, Java_Home Variable and other features are unavailable states.
4. It will be installed on the local hard drive option.
5. Like that, we will be able to set the icons with features.
6. Then, finally, select the Install button to install the OpenJDK.
7. Once Installation is completed, click on Finish.
By using System Environment Variables, we will be able to see the OpenJDK versions.
Conclusion
The OpenJDK platform is fantastic for creating apps, and it keeps getting better over time rather than oracle jdk versions. To encourage for to join the sizable developer community that regularly works with Java language, and it’s the biggest assurance that Java will continue to exist for long years ago.
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