Java Reference
In-Depth Information
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.
7.1 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 53million subscribers. 1 When you consider that
1 KDDI has over 30million subscribers and Softbank has over 18million. So in Japan, four
out of every five people you meet has an account with one of these three companies - this
is very big business! See
annual/fy2007/p10 e.pdf.
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