Nokia 9210 Service Manual

How to develop Java

Applications for the Nokia 9210 Communicator

Version 1.1

Figure 2 gives a general overview on how to develop applications for the Nokia 9210
Communicator. Basically it doesn't differ from writing Java code. Tools for running the

application in the emulator or in the target device are included in the SDK.

FIGURE 2. Java application creation process for the Nokia 9210 Communicator

Writing and compiling Java source code is as usual; code files can be archived using the jar
command (for example jar cf MyApp.jar *.class). Also .zip format can be used. Add-on
applications can be made visible in the Extras screen in the Nokia 9210 Communicator. The

applications should be installed on the !:\system\apps\<appname>\, where ! is the letter of the
imaginary drive (meaning either the Communicator's memory or Memory Card). When installing
the end-user has the opportunity to choose the destination drive of the installation.

Now in this small application we are using Symbian's own classes. The path of these classes
should be added to the classpath variable. This can be done by editing the classpath variable in
the autoexec.bat (Windows 98) or in Control Panel -> System -> Environment (Windows NT). For

example in Windows 98 the classpath variable could be as follows:

classpath=.;c:\jdk1.1.8\lib\classes.zip;c:\jdk1.1.8\lib\classes\class
es.zip; c:\jdk1.1.8\lib\classes\cawt.jar

.java

Java source files

Normal Java

build process

javac

Java compiler

.class

Java class files

jar

Java packager

.jar

Jar file(s)

Other files
(audio, image, etc.)

makesis

<app>.sis

Installation

file

aifbuilder

<app>.aif

Application

information file

<app>.app

Symbian

application file

<app>.txt

Command line

parameters for JVM

UID, application name, multi bitmap file

Symbian platform
specific process

<app>.pkg

List of components