XML and J2ME Based Mobile Commerce

Abstract

In this paper, we will introduce our work on how we develop a mobile environment under Java technology. In recent years, the Internet is becoming wireless, and there are more and more intelligent devices connecting to Internet through wireless technology. Unlike PC industry, these devices have its exclusive operating systems and hardware. It is hard for application developers to develop programs on these devices and integrate the existence services for these devices to use. Solution for this situation is Java technology. J2ME is the new generation Java technology that especially focuses on the mobile devices. It provides a similar environment as standard Java environment for developer to develop applications on these devices. The most common mobile devices are cellular phone and PDA. In this paper we will focus on how to run Java programs on these two devices. We will introduce what is J2ME technology and compare J2ME with other wireless technology such as WAP technology. Then, we will present how to program Java applications on mobile devices. We use Spotlet for PDA while MIDlet for Java phone. We will demonstrate a web site with mobile devices support and an XMIDlet system for PDA and cellular phone, which support dynamic download and execute XML-based applications.