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5
CHAPTER
2
Developing MIDlet Suites
This chapter describes how you can use the J2ME Wireless Toolkit to create
applications. It begins with a description of toolkit projects, then works through the
development process.
There are two basic development cycles you are likely to follow in creating MIDlet
suite applications. The first is quicker and simpler; you will probably use it in your
initial development. The second cycle is longer but allows for more comprehensive
and realistic testing.
Toward the end of the chapter you’ll read about how to use the J2ME Wireless
Toolkit with advanced development tools like an obfuscator and a debugger. A
final section briefly describes how to configure a web server to serve MIDP
applications.
2.1 About Projects
In the J2ME Wireless Toolkit, MIDlet suites are organized into projects, where the
end result of one project is one MIDlet suite. A project contains all of the files that
will be used to build a MIDlet suite, including Java source files, resource files, and
the MIDlet descriptor.
The J2ME Wireless Toolkit works on one project at a time. You can create a new
project or open an existing project.
In this chapter you will work with a very simple example project. As you read
about each step in the development cycles, you can work along in the toolkit.
To create a new project, first start KToolbar. On Windows, choose Start > Programs
> J2ME Wireless Toolkit 2.2 > KToolbar.
2
You’ll see the KToolbar window.
2. Depending on how Windows is configured, you might need to choose Start > All Programs instead of Start
> Programs.
- User’s Guide 1
- Contents 3
- Contents v 5
- Contents vii 7
- Index 119 8
- Who Should Use This Book 9
- Related Documentation 9
- How This Book Is Organized 10
- Preface xi 11
- Typographic Conventions 12
- We Welcome Your Comments 12
- Introduction 13
- 1.2 The Tools in the Toolkit 14
- 1.3 Toolkit Features 15
- 1.4 Supported Technology 15
- Developing MIDlet Suites 17
- The KToolbar window 18
- Creating a new project 18
- 2.2.1 Edit Source Code 19
- 2.2.2 Build 20
- 2.2.3 Run 21
- List of project MIDlets 22
- TinyMIDlet in action 22
- 2.3.1 Package 23
- 2.3.2 Install 24
- URL prompt 25
- Confirming the installation 25
- 2.3.3 Run 26
- 2.4 Using an Obfuscator 27
- 2.5 Using a Debugger 29
- ■ From the command line, run: 30
- The project settings window 32
- 3.3 Manipulating MIDlets 35
- 3.4 Using the Push Registry 36
- Project directory structure 37
- 3.7 Configuring KToolbar 38
- Using the Emulator 41
- 4.2 Using the Emulator 42
- 4.3.1 Network Proxies 44
- 4.3.2 Heap Size 45
- 4.3.3 Storage and Cleaning 45
- 4.4 Pausing and Resuming 47
- 4.5 Running the Emulator Solo 48
- Monitoring Applications 51
- Turning on the profiler 52
- The method profiler 52
- 5.1.1 The Call Graph 53
- 5.2 Using the Memory Monitor 54
- 5.3 Using the Network Monitor 56
- 5.3.1 Filtering Messages 57
- 5.3.2 Sorting Messages 58
- Information 58
- Security and MIDlet Signing 61
- 6.2 Protection Domains 62
- 6.3 Signing a MIDlet Suite 63
- 6.4 Managing Keys 64
- 6.4.2 Getting Real Keys 65
- 6.5 Managing Certificates 66
- 6.5.1 Importing Certificates 67
- 6.5.2 Removing Certificates 68
- Setting WMA preferences 70
- The WMA console 71
- Sending a binary message 73
- 7.3.4 Sending MMS Messages 74
- Using the Mobile Media API 77
- 8.2 Using MediaControlSkin 78
- 8.3 Media Capture 78
- 8.4 Well-Behaved MIDlets 78
- 9.1 JSR 184 Overview 79
- 9.2 Immediate Mode 79
- 9.4 Trading Quality for Speed 80
- 9.3 Retained Mode 80
- 10.1 The FileConnection API 83
- 10.2 The PIM API 84
- Using the Bluetooth and OBEX 85
- 11.3.1 OBEX Preferences 86
- BCC properties 87
- Using Web Services 89
- Application Demonstrations 91
- WMADemo is contained in 92
- A.2 General Instructions 93
- A.3 BluetoothDemo 94
- A.4 Demo3D 96
- A.4.2 PogoRoo 97
- A.4.3 retainedmode 98
- A.5 JSR172Demo 99
- A.6 mmademo 99
- A.6.1 Simple Tones 100
- A.6.2 Simple Player 100
- Simple Player commands 101
- A.6.3 PausingAudioTest 102
- A.6.4 Video 102
- A.7 ObexDemo 103
- A.8 PDAPDemo 106
- A.8.2 The PIM API 108
- An empty contact list 109
- Adding contact fields 109
- A.9 WMADemo 110
- Sending a text message 111
- An incoming text message 112
- Addressing an MMS message 113
- WMADemo receives the image 114
- Command Line Reference 115
- B.2.1 Build 116
- B.2.2 Package 117
- B.2.3 Run 118
- B.2.4 Debugging 119
- Toolkit component commands 120
- B.5 Using Security Features 122
- B.5.2 Signing MIDlet Suites 123
- B.5.3 Managing Certificates 124
- B.6 Using the Stub Generator 125
- B.6.1.1 Example 126
- Internationalization 127
- C.2 Emulated Locale 128
- C.3 Character Encodings 128
- Index 121 133
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