Step 1: Import extension packages

Extension packages include classes and functions necessary for your Web services server application. Use the IMPORT statement to include these packages.

Include the following lines at the top of your module as instructions to import the required libraries:

IMPORT com    
IMPORT util

Methods to create a REST Web Service server application are contained in the classes that make up the com library of the Genero Web Services (GWS).

The calculator demo application also uses methods from the util.JSON class for data exchange.

In the next step we start the server and listen for incoming requests, Step 2: Listen for requests