OpenJDK
OpenJDK is an open-source implementation of the Java Platform, Standard Edition (Java SE). It contains the core classes and libraries that allow developers to compile and run Java applications.
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OpenJDK: Open-Source Java Implementation
OpenJDK is an open-source implementation of the Java Platform, Standard Edition (Java SE). It contains the core classes and libraries that allow developers to compile and run Java applications.
What is OpenJDK?
OpenJDK is an open-source and free implementation of the Java Platform, Standard Edition (Java SE). It contains the core Java programming language APIs and virtual machine that allow developers to compile and run Java applications.
OpenJDK is licensed under the GNU Public License version 2 and is the officially supported reference implementation of Java SE since version 7. Oracle and the Java community collaboratively develop and maintain OpenJDK under the aegis of the OpenJDK project.
Some key aspects of OpenJDK include:
- Contains all core Java APIs like java.lang, java.io, java.util etc
- Includes a Java Virtual Machine called HotSpot JVM
- Supports the latest Java Language Specification out of the box
- Developed openly by Oracle engineers and Java community members
- Available completely free of cost and can be freely modified and distributed
OpenJDK binaries are the default Java runtime and/or SDK environment shipped with Linux distributions like Debian, Ubuntu etc. It offers portable, high performance Java development with no licensing or support costs making it popular for developing and deploying Java applications.
OpenJDK Features
Features
- Open source implementation of Java SE
- Includes Java Runtime Environment (JRE) and Java Development Kit (JDK)
- Supports multiple platforms like Windows, Linux, macOS
- Provides core Java APIs and virtual machine
- Regular updates and security patches
Pricing
- Open Source
Pros
Free and open source
Active community support
Platform independent and portable
Regular updates and bug fixes
Good performance and stability
Cons
Lacks some advanced/enterprise features of Oracle JDK
Slower adoption of new Java features
Limited commercial support options
Might require more testing for production systems
Official Links
The Best OpenJDK Alternatives
Top Development and Java Development and other similar apps like OpenJDK
Here are some alternatives to OpenJDK:
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Zulu
Zulu is an open-source project started by Azul Systems that provides a distribution of OpenJDK, the open-source implementation of the Java Platform. Zulu takes OpenJDK releases from the upstream OpenJDK community and applies additional patching, testing, and certification to create a production-ready build of OpenJDK for a variety of platforms.Some...
Embitz
Embitz is an integrated development environment (IDE) designed specifically for embedded systems and Internet of Things (IoT) application development. It enables developers to write, build, deploy and debug firmware code on various microcontroller boards and systems.Key features of Embitz include:Supports various popular microcontroller architectures like ARM Cortex-M, AVR, PIC, ESP32,...
Adoptium
Adoptium, formerly known as AdoptOpenJDK, is an open source, production-ready runtime environment for Java that is managed by the Eclipse Foundation. It provides prebuilt OpenJDK binaries that have passed rigorous testing and are ready to use for Java development and deployment.Key features of Adoptium include:Binaries built from OpenJDK code that...
Amazon Corretto
Amazon Corretto is a no-cost, multiplatform, production-ready distribution of the Open Java Development Kit (OpenJDK). It is designed for developers who want a reliable, compatible implementation of OpenJDK to build and run Java applications without paying an extra license fee.Key features of Amazon Corretto include:No-cost, commercially-usable implementation of OpenJDK 8,...
Oracle JDeveloper
Oracle JDeveloper is an integrated development environment (IDE) that helps developers build applications using various technologies. It supports full development life-cycle from design through deployment with support for latest technologies.Key features of Oracle JDeveloper:Visual and declarative development tools for Java, XML, SQL etc.Integrated support for multiple technologies including Java, Database,...
Spring Roo
Spring Roo is an open-source rapid application development tool that streamlines building Java-based web applications using the Spring Framework. It provides automation, generation of boilerplate code, and runtime scaffolding using domain-specific commands, making development easier and faster.Some key features of Spring Roo include:Automatic generation of data models, repositories, controllers, tests,...
Java-Editor
Java-Editor is a feature-rich, open-source code editor designed specifically for Java development. It provides a lightweight and fast environment for writing, editing, and debugging Java code.Key features of Java-Editor include:Syntax highlighting - Code is colorized to improve readability and quickly identify errors.Intelligent auto-completion - Code suggestions and shortcuts to boost...
Liberica JDK
Liberica JDK is an open-source, standards-compliant Java Development Kit created and supported by BellSoft. It provides a complete, compatible Java runtime environment for developing and running Java applications, including:The Liberica Java Virtual Machine for running Java bytecodeA full set of Java Class Libraries and APIsThe javac compiler for converting Java...
10Duke SDK
10Duke SDK is a comprehensive software development kit for working with 3D data across platforms and devices. It provides a set of APIs and tools that allow developers to quickly integrate high-performance 3D capture, reconstruct, visualize, measure and stream technologies into their applications.Some key features of 10Duke SDK include:Cross-platform 3D...
