Yes, from the FAQ: "The CheerpJ compiler, based on LLVM/Clang, as well as on parts of Cheerp, converts Java bytecode into JavaScript, without requiring the Java

Yes, from the FAQ: "The CheerpJ compiler, based on LLVM/Clang, as well as on parts of Cheerp, converts Java bytecode into JavaScript, without requiring the Java source. CheerpJ can be invoked on whole Java archives (.jar) or on single .class files, and generates a .jar.js (or .js) output. " We've seen this plenty with GWT and the likes, but this one is self-hosted in the browser to support dynamic class loading. As with Emscripten, the real struggle is the stdlib, not the translation. As an alternative, I would recommend people look at TeaVM[0]. 0 - https://github.com/konsoletyper/teavm https://github.com/konsoletyper/teavm