JavaC
From APIDesign
JavaC is the Java source to bytecode compiler. Thanks to TulachMoreDEW project, it can run in a browser. For years NetBeans editing capabilities were based on nb-javac - a manual fork of official OpenJDK javac codebase distributed under GPLwithClassPathException license. In 2021, it was decided the ApacheNetBeans project can distribute the nb-javac component as part of their binaries heavily simplifying the distribution, bundling, testing of the NetBeans IDE on various JDK versions.