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34 J2ME Wireless Toolkit User’s Guide • October 2004
The toolkit enables you to choose a different location for the storage files, and you
can limit the size of the storage. This is useful if you wish to test your application’s
behavior when a small amount of persistent storage is available.
To adjust the persistent storage settings, choose Edit > Preferences... and click on
the Storage tab. Enter the name of the directory you wish to use for persistent
storage. You can only enter a relative path, and the directory you specify is created
in the {toolkit}\appdb directory.
If you wish, you can enter a limit in kilobytes for the size of the persistent storage.
Bear in mind that the storage implementation has some overhead in addition to the
space your application uses. For example, if you enter 8 kB for the persistent
storage size, 8192 bytes is available for both your application data and the storage
overhead.
If you wish to erase the persistent storage of the emulator, choose File > Utilities...
from the KToolbar menu. Click on the Clean Database button to wipe the
persistent storage clean.
4.3.4 Adjusting Emulator Performance
The emulator uses many of the resources of your desktop computer, including its
display and network connection. Compared to the desktop-based emulator, a real
MIDP device usually has a slower processor, less memory, and a slower network
connection, and might have a different type of display.
The J2ME Wireless Toolkit allows you to simulate the constrained environment of a
real device. Although the emulator does not represent a real device, adjusting the
performance settings gives you useful information about how your application
performs under varying runtime conditions.
Choose Edit > Preferences... and click on the Performance tab.
- 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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