This chapter shows how you can access Model Manager databases via the Model Manager application programming interface (API) for use with the Java® programming language. The Model Manager API can be used in the Application Builder’s Method Editor, from a standalone Java® application, and from the LiveLink™ for MATLAB® interface. If you are using the Model Manager API from the Application Builder, see also the Application Programming Guide for useful information when creating methods for applications. See the Programming Reference Manual to learn how to use the COMSOL API to access models through the model object.