Java ME on Symbian OS: Inside the Smartphone Model

Chapter 7. DoJa (Java for FOMA)

This chapter introduces the DoJa profile from NTT DoCoMo which is used in millions of handsets worldwide and especially in Japan. We start with some mobile application history in the Japanese market and then examine what the DoJa profile is all about. Following on from that, we configure the Eclipse IDE for DoJa development and run through some application code. Then we have a look at the differences you need to be aware of when porting from MIDP applications to DoJa and have a brief word about game development.

In Section 7.8, Sam Cartwright from Mobile Developer Labs provides an in-depth look at the latest DoJa profile available to developers based in Japan, giving us a rare insight into this exciting part of the mobile development world. He walks us through some of the more advanced features available on Japanese devices – including biometrics, gesture readers, compasses and virtual purchasing.

In the Beginning...

...someone created the mobile phone. Then some bright spark built the first mobile phone game and a decade later we have a multi-billion dollar industry led by Japan. Right now, there are three major operators in Japan – KDDI, NTT DoCoMo and Softbank (also known at various times as J-Phone, Vodaphone KK and Vodaphone Japan). These three companies pretty much control the mobile phone market in Japan although NTT DoCoMo easily holds the balance of power with a 47% market share which amounts to over 53 million subscribers.^[50] When you consider ...