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Oracle JDK (Java Development Kit): Oracle JDK is the official reference implementation of the Java Platform, Standard Edition (Java SE). It included the JRE along with development tools.
OpenJDK: An open-source alternative to Oracle JDK, OpenJDK is a community-driven project. It provides a free and open-source implementation of the Java Platform, and many other JDKs, including Oracle JDK, are derived from OpenJDK.
Below is a simple table highlighting some key points of comparison between Oracle JDK and OpenJDK:
| Feature | Oracle JDK | OpenJDK |
|---|---|---|
| Vendor | Oracle Corporation | OpenJDK Community |
| Licensing | Commercial (Paid) with Oracle Binary Code License Agreement | Open Source (GNU General Public License, version 2, with the Classpath Exception) |
| Support | Commercial support available with Oracle Support subscription | Community support, may have commercial support options from other vendors |
| Updates and Patches | Regular updates with security patches provided by Oracle | Updates and patches contributed by the open-source community |
| JavaFX | Bundled with Oracle JDK (until JDK 11) | Separately available in OpenJFX for OpenJDK |
| Mission Control | Bundled with Oracle JDK (until JDK 11) | Separately available for OpenJDK |
| Flight Recorder | Requires commercial subscription for full features | Open-source version available with OpenJDK |
| Commercial Features | Some features are commercial and require a subscription | All features are open source and freely available |
| Build Process | Proprietary build process for Oracle JDK | OpenJDK build process is open and community-driven |
| Release Cycle | Generally aligned with OpenJDK releases | OpenJDK sets the base for Oracle JDK releases |
| Long-Term Support (LTS) | Oracle provides LTS releases with extended support | Some OpenJDK builds, like AdoptOpenJDK or Amazon Corretto, offer LTS support |
| Usage Restrictions | Some restrictions in Oracle JDK binary distribution | OpenJDK has no usage restrictions |
| Java Cryptography Extension (JCE) | Unlimited strength policy included by default | May require additional configuration for unlimited strength cryptography |
Please note that the information provided here is subject to change, and it's always a good idea to refer to the official documentation of Oracle JDK and OpenJDK for the most up-to-date details.
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