CAPTCHA:
  CAPTCHA is for Completely Automated Public Test to tell Computers and Humans Apart. CAPTCHA is a Web service which serves all the requests that it gets from the clients by generating captcha’s. CAPTCHA provides both ImageCaptcha and AudioCaptcha. Client needs to get registered with the service, and later based on the type of request that the service receives, it will serve the requests with either Image/Audio CAPTCHA. These CAPTCHA are used to prevent automated software from performing actions which degrade the quality of service of a given system, whether due to abuse or resource expenditure.

Responsibilities:
•Interacting with business analysts to understand the requirements.
•Responsible for quick learning the concept of Web service and understanding underlying tools used.
•Involved in low level design, development.
•Involved in coding Servlets and JSP.
•Designed and developed web services for managing the user preferences.
•Responsible for handling the conference calls with the client.
•Used Rational Rose for Object Oriented Models (Data model, Use case Model and Design Model).
•Performed source code control using concurrent Versions System (CVS).
•Responsible for writing the test cases using Junit and testing different scenarios.
•Involved in Preparation of Test Case documentation and Service User Guide.
Environment: J2EE, SOAP Web service, JSP, Servlets, WebSphere Studio Application Developer, CVS, XML, JUnit, UML, HTML, Rational Rose

CAPTCHA Class Diagram.