Abstract:

In order to fill the vacancy of accessing campus information on mobile devices, a campus information inquiry system is designed and implemented. The mobile client applies popular J2ME Java (Plalform Micro Edition) MIDP and J2ME Polish framework to adapt a variety of mobile operating systems. GSM (Global System for Mobile Communication) Modem hardware, modular architecture and half-synchronous/half-asynchronous framework are applied to the server implementation to provide smooth update, ensuring the fairness and reliability of services on the server side, to give a solution on the interaction between the server and clients and a way of implementing queries through GSM messages. The benchmark results verify the availability, reliability and security of the system.

Key words: Java Platform Micro Edition(J2ME), real-time query, modularity, Global System for Mobile Communication (GSM) Modem