The ServletConfig gives the INFORMATION about the servlet INITIALIZATION parameters. The servlet ENGINE implements the ServletConfig interface in order to PASS configuration information to a servlet. The server passes an object that implements the ServletConfig interface to the servlet's init() method.
The ServletContext gives information about the container. The ServletContext interface provides information to servlets regarding the environment in which they are running. It also provides standard way for servlets to write events to a log file.

The ServletConfig gives the information about the servlet initialization parameters. The servlet engine implements the ServletConfig interface in order to pass configuration information to a servlet. The server passes an object that implements the ServletConfig interface to the servlet's init() method.
The ServletContext gives information about the container. The ServletContext interface provides information to servlets regarding the environment in which they are running. It also provides standard way for servlets to write events to a log file.