In Java, we use servlets (and the Java Servlet API) for this purpose. Think of a servlet as a tiny server whose job is to accept requests and issue responses. As I explained in my introduction to ...

Prior to the Java EE 7 release, developers struggled to implement a Servlet file upload component because it was a rather sordid affair that required a great deal of error-prone and bloated code.

An extension to Java that provides a programming interface (API) for implementing server-side programs written in Java (Java servlets). See servlet. THIS DEFINITION IS FOR PERSONAL USE ONLY.