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Build your stock with J2ME

Jack Wind, Author

Jackwind Li Guojie has been writing software professionally for many years. As leader of the Jackwind Group, he provides software consulting and training servies in the Asia-Pacific area. Currently, he is also pursuing research on soft computing at Nanyang Technological Unversity, Singapore. You can contact Jackwind at jackliguojie@hotmail.com.

Summary: In this tutorial, we will build a typical Java 2 Platform, Micro Edition (J2ME) application, called UniStocks, based on CLDC (Connected Limited Device Configuration) and MIDP (Mobile Information Device Profile) APIs.

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Date: 08 Oct 2002
Level: Introductory
PDF: A4 and Letter (103 KB | 35 pages)Get Adobe® Reader®

Activity: 3971 views
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Introduction

J2ME tutorial overview

In this tutorial, we will build a typical Java 2 Platform, Micro Edition (J2ME) application, called UniStocks, based on CLDC (Connected Limited Device Configuration) and MIDP (Mobile Information Device Profile) APIs. As we build the application, we'll cover the following topics:

MIDlet basics
MIDP high-level user interface design
MIDP low-level user interface design
Record management system (RMS)
J2ME networking and multithreading
Server-side design
Application optimization and deployment
Overcoming J2ME limitations

About UniStocks

UniStocks is a stock application that enables the user to access and manage information of any stock -- anywhere, anytime.

Like any stock application on your PC or on the Web, UniStocks lets the user:

Add stocks (store stock symbols on a phone)
Delete stock(s) (remove stock symbols)
View live information of selected stocks, such as current high price, low price, volume, etc.
View charts of historical data (one month, three months, six months, one year), price, volume, and so forth.

UniStocks is based on a client-server architecture. The server will provide all required stock information, such as live data and historical data.

Figures 1 through 3 show the main menu; the downloading status, and the stock historical chart, respectively.

Figure 1: UniStocks main menu

Figure 2: UniStocks download status

Figure 3: UniStocks historical chart

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