An object oriented system for developing distributed applications

With the recent advances in communication technology and the availability of powerful desktop computers, networking has gained popularity and many applications are being moved onto the Internet. To ease the development of distributed applications, software support to facilitate coordination and communication is needed. The paper describes an object oriented system for structured design and development of distributed applications. The basic system consists of a set of multithreaded servers, one server for each site in the network, which provide some basic communication facilities. The system has been developed using JAVA as the programming language. We use the software support provided by this basic system to define commonly used patterns of interaction in distributed applications. We also identify several different techniques for systematic composition of patterns to develop different applications. We illustrate the use of our system by defining some patterns and using them to build a sample application.