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Bytebox Library Brings Java Support to Cloudflare Workers via WebAssembly

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A new open-source project called Bytebox enables Java developers to run Java code on Cloudflare Workers by compiling it to WebAssembly using TeaVM. The library is available as a Gradle plugin or an NPM module, with dependencies hosted on Maven Central and the Gradle Plugin Portal. It currently supports Java 21 and 25 LTS versions and includes built-in utilities for JSON handling, bindings management, and most of the Java Standard Library. However, due to Cloudflare Workers' single-threaded synchronous nature, Java concurrency features such as java.util.concurrent are unsupported and will cause compilation errors. Full documentation is available at bytebox.gmitch215.dev, and platform limitations are detailed in the project's GitHub repository.

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