This Full Stack Java Developer course is designed to give you an essence of front-end, middleware, and back-end Java web developer technologies. You will learn to build an end-to-end application, test and deploy code, store data using MongoDB, and much more. A full stack Java developer is a web developer that uses the Java language in the development of the entire technology stack of a web-based application. … As a full stack Java developer, you must understand how the entire technology stack functions as a whole and have deep expertise of each component.