A Java Developer is a programmer who designs, develops, and manages Java-based applications and software. With most large organizations using Java to implement software systems and backend services, a Java developer is one of the most sought-after jobs today.
Python developers are computer programmers who specialize in writing server-side web application logic. Their job is to use the Python programming language to develop, debug, and implement application projects.
The full stack developer definition is “someone who can work on both the back-end and front-end of systems.” This means that they can develop fully fledged platforms (with databases, servers and clients) which don't need other applications to function.