Java is a widely-used programming language, and there are several implementations available for different platforms and use cases. Here are some of the notable Java implementations:

  • OpenJDK: The Open Java Development Kit is the reference implementation of Java. It is open-source and freely available.

  • Oracle JDK: Oracle JDK is the official Java Development Kit provided by Oracle Corporation. It includes additional features and tools.

  • Zulu JDK: Zulu JDK is an open-source, 100% open JDK build for Windows, Linux, and macOS. It is maintained by Azul Systems.

  • Eclipse OpenJ9: Eclipse OpenJ9 is a Java Virtual Machine (JVM) implementation that is designed for high performance and low footprint.

  • HotSpot: HotSpot is the JVM implementation that is used by most Java applications. It is known for its performance and scalability.

  • JRockit: JRockit is a JVM implementation that was developed by BEA Systems and is now part of Oracle JDK. It is known for its performance and scalability.

  • ZeroTurnaround: ZeroTurnaround is a JVM implementation that is designed for rapid development and deployment of Java applications.

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For more information on Java and its implementations, you can visit the following resources: