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CheerpJ 4.1: Java in the browser, now supporting Java 17 (preview)


The latest release of our state-of-the-art Java runtime that runs completely in the browser via WebAssembly, is now available. Supports up to Java 17.

CheerpJ is a full WebAssembly-based JVM for the browser, and comes with a complete OpenJDK runtime, as well as a powerful emulation layer to provide file system access, general networking support and other OS-level features. CheerpJ 4.1 introduces an unprecedented level of support for mobile devices, enabling for the first time to make complex Java applications available to users across phones and, especially, tablets. CheerpJ is a product built with passion and a lot of coffee by Leaning Technologies, an international team of WebAssembly hackers based in Amsterdam (NL) and Leeds (UK).

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