Java is becoming increasingly important as a programming language for applications based on the network-centric computing paradigm. While more and more applications are written in Java, a large number of working C++ implementations for standard tasks still exist. Based on a domain model for language interoperability, this paper derives the structure of the necessary bridging code between C++ and Java and describes a mechanism as well as its implementation for automatic bridging code generation. The paper then provides a top-down overview of the bridging code layers describing how C++ features are remodeled, and how C++ definitions are automatically mapped to Java.