Is OpenJDK Fully Compatible with JavaFX?

JavaFX and OpenJDK: Compatibility and Linux Distributions

Can I Use JavaFX with OpenJDK?

Despite an earlier claim that OpenJDK had poor JavaFX support, the JavaFX project is now an integral part of OpenJDK. However, OpenJFX, a component that enhanced JavaFX functionality, was initially not fully integrated into OpenJDK until version 9.

Linux Distributions with OpenJFX

While most Linux distributions do not currently package JavaFX with their OpenJDK installations, there are a few exceptions:

• Debian Linux: Offers a pre-built OpenJFX binary distribution. (Note: Only works for Java 8 currently)

Differences Between Oracle and OpenJDK with JavaFX

Oracle JDK incorporates certain closed-source software that OpenJDK does not, with JavaFX-related components being:

• ON2 VP6 video codec (owned by Google and not open-sourced)
• Oracle WebStart/Browser Embedded application deployment technology

This means OpenJDK versions of JavaFX cannot play VP6 FLV files and lack the WebStart/Browser Embedded deployment feature. However, H.264 and other common video formats will play fine with an open JavaFX implementation.

Deployment Considerations

For large-scale deployments, using Java's self-contained application mode is recommended. This method bundles a specific Java version with your application, ensuring compatibility and bypassing any need for pre-installed Java on the user's machine.

Future of JavaFX and OpenJDK

Oracle has expressed their continued support for JavaFX in conjunction with OpenJDK, with ongoing developments aimed at enhancing the platform's capabilities and ensuring its integration with the open-source community.

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