Java 2 Micro Edition Mobile Application Development

Abstract

The purpose of this paper is to present the process of mobile applications development using J2ME. As a practical part of this project I have developed an application allowing users to send and receive short text messages longer than standard - 160 characters long messages. I have achieved that by implementing Huffman’s compression algorithm and limiting the number of available characters only to capital letters and a limited set of symbols including digits. I begin this paper with a description of J2ME platform architecture and an explanation of what the configuration and profile is. I also list some limitations of the Java language and virtual machine on devices that the application is targeted at. In the second chapter I focus on the life cycle of a MIDlet (Java application that uses Mobile Information Device Profile and Connected, Limited Device Configuration). Second chapter also includes a description of tools that I have used to build and test the application. In the third chapter detailed information about the application itself can be found including user’s manual and technical background. In the last chapter, some facts about the Huffman’s compression algorithm are given and the way I have applied it to my project.