The HotSpotgroup is comprisedof developers involved in the design, implementation, andmaintenance of the HotSpot virtual machine.
The HotSpot VM code base has been worked on by hundreds ofpeople, over the course of 20 years, so far. It's big. There arearound 3000 C/C++ header and source files, comprising more than 1.2million lines of code. In addition to the expected class loader,bytecode interpreter, and supporting runtime routines, you get twoor three JIT compilers from bytecode to native instructions, ahandful of garbage collectors, and a set of high-performanceruntime libraries for synchronization, etc.
The HotSpot source code can be found in theJDK repository. Specifically,it is contained in thehttps://github.com/openjdk/jdk/tree/master/src/hotspotdirectory.