Learning Wireless Java_ Help for New J2ME Developers [Mahmoud 2002-01-11].pdf

Learning Wireless Java

Publisher : O'Reilly

Pub Date : December 2001

ISBN : 0-59600-243-2

Pages : 262

Table of

Contents

Learning Wireless Java is for Java developers who want to create applications for the

Micro Edition audience using the Connected, Limited Device Configuration and the

Mobile Information Device Profile (MIDP). These APIs specifically for devices such as

mobile phones and pagers, allowing programmers to create MIDlet applications. This

book offers a solid introduction to J2ME and MIDP, including the javax.microedition

classes, as well as classes surrounding the features of the various platforms that the J2ME

supports.

By Qusay Mahmoud

Brought to you by ownSky!!

Table of Content

Table of Content .................................................................................................................. i

Preface ............................................................................................................................... vii

Audience ........................................................................................................................ vii

Contents of This Book ................................................................................................. vii

Comments and Questions ........................................................................................... ix

Acknowledgments .......................................................................................................... x

Part I: Introducing Java 2 Platform, Micro Edition (J2ME) ............................................... 1

Chapter 1. Overview of J2ME ........................................................................................... 2

1.1 What Is J2ME? ......................................................................................................... 2

1.2 Downloading the J2ME Wireless Toolkit ............................................................. 6

1.3 A Simple Example ................................................................................................... 8

Chapter 2. The Connected Limited Device Configuration (CLDC) ........................... 15

2.1 Examining the CLDC in Detail ............................................................................. 15

2.2 Using the Standalone CLDC and KVM .............................................................. 22

2.3 CLDC Next Generation ......................................................................................... 24

Chapter 3. The Mobile InformationDevice Profile (MIDP) .......................................... 25

3.1 Mobile Information Devices .................................................................................. 25

3.2 More About MIDlets .............................................................................................. 28

Part II: Programming with the CLDCand the MIDP ......................................................... 33

Chapter 4. Working with MIDlets ................................................................................... 34

4.1 The Application Manager ..................................................................................... 35

4.2 Creating MIDlets .................................................................................................... 36

Chapter 5. MIDP GUI Programming .............................................................................. 48

5.1 Why Not Reuse the AWT? ................................................................................... 48

5.2 The MIDP GUI APIs .............................................................................................. 48

5.3 The High-Level MIDP APIs .................................................................................. 51

5.4 Creating Low-Level GUI Components ............................................................... 72

Chapter 6. MIDP Events .................................................................................................. 78

6.1 Screen Navigation ................................................................................................. 78

6.2 Handling Low-Level Events ................................................................................. 89

Chapter 7. Networking ..................................................................................................... 94

7.1 Generic Connections ............................................................................................ 94

7.2 MIDP Connectivity ................................................................................................. 96

7.3 The HTTP Programming Model .......................................................................... 99

7.4 Invoking Remote Applications from MIDlets ................................................... 100

7.5 Wireless Session Tracking ................................................................................. 111

7.6 MIDlet Networking Security ................................................................................ 112

Chapter 8. Database Programming ............................................................................. 113

8.1 The Record Management System .................................................................... 113

8.2 Programming with the RMS ............................................................................... 114

Chapter 9. The MIDP for Palm OS .............................................................................. 129

9.1 Installing the MIDP for Palm OSon the Windows Platform ........................... 129

9.2 Developing New Applications ............................................................................ 132

9.3 PRC Command-Line Conversion ...................................................................... 137

9.4 Advanced Java Applications .............................................................................. 138

9.5 A Final Thought ................................................................................................... 140

Part III: API Quick Reference ............................................................................................ 141

Appendix A. The java.io Package ................................................................................ 142

java.io.ByteArrayInputStream.................................................................................. 142

java.io.ByteArrayOutputStream ............................................................................... 143

java.io.DataInput ...................................................................................................... 143

java.io.DataInputStream ........................................................................................... 143

java.io.DataOutput.................................................................................................... 144

java.io.DataOutputStream ........................................................................................ 145

java.io.EOFException .............................................................................................. 145

java.io.InputStream .................................................................................................. 146

java.io.InputStreamReader ....................................................................................... 146

java.io.InterruptedIOException ................................................................................ 147

java.io.IOException.................................................................................................. 147

java.io.OutputStream................................................................................................ 147

java.io.OutputStreamWriter ..................................................................................... 148

java.io.PrintStream ................................................................................................... 148

java.io.Reader ........................................................................................................... 149

java.io.UnsupportedEncodingException .................................................................. 149

java.io.UTFDataFormatException ........................................................................... 150

java.io.Writer............................................................................................................ 150

Appendix B. The java.lang Package ........................................................................... 151

java.lang.ArithmeticException ................................................................................. 152

java.lang.ArrayIndexOutOfBoundsException.......................................................... 152

java.lang.ArrayStoreException................................................................................. 152

java.lang.Boolean ..................................................................................................... 152

java.lang.Byte ........................................................................................................... 153

java.lang.Character ................................................................................................... 153

java.lang.Class.......................................................................................................... 154

java.lang.ClassCastException................................................................................... 155

java.lang.ClassNotFoundException ......................................................................... 155

java.lang.Error .......................................................................................................... 155

java.lang.Exception .................................................................................................. 155

java.lang.IllegalAccessException............................................................................. 156

java.lang.IllegalArgumentException ........................................................................ 156

java.lang.IllegalMonitorStateException ................................................................... 156

java.lang.IllegalStateException ................................................................................ 156

java.lang.IllegalThreadStateException..................................................................... 157

java.lang.IndexOutOfBoundsException................................................................... 157

java.lang.InstantiationException .............................................................................. 157

java.lang.Integer ....................................................................................................... 157

java.lang.InterruptedException................................................................................. 158

java.lang.Long .......................................................................................................... 158

java.lang.Math .......................................................................................................... 159

java.lang.NegativeArraySizeException.................................................................... 159

java.lang.NullPointerException................................................................................ 160

java.lang.NumberFormatException.......................................................................... 160

java.lang.Object........................................................................................................ 160

java.lang.OutOfMemoryError .................................................................................. 161

java.lang.Runnable ................................................................................................... 161

java.lang.Runtime..................................................................................................... 161

java.lang.RuntimeException..................................................................................... 162

java.lang.SecurityException ..................................................................................... 162

java.lang.Short.......................................................................................................... 162

java.lang.String......................................................................................................... 163

java.lang.StringBuffer .............................................................................................. 164

java.lang.StringIndexOutOfBoundsException ......................................................... 165

java.lang.System....................................................................................................... 165

java.lang.Thread ....................................................................................................... 166

java.lang.Throwable ................................................................................................. 167

java.lang.VirtualMachineError................................................................................. 167

Appendix C. The java.util Package .............................................................................. 168

iii

java.util.Calendar...................................................................................................... 168

java.util.Date ............................................................................................................ 169

java.util.Enumeration ............................................................................................... 170

java.util.EmptyStackException ................................................................................ 170

java.util.Hashtable .................................................................................................... 170

java.util.NoSuchElementException.......................................................................... 171

java.util.Random ...................................................................................................... 171

java.util.Stack ........................................................................................................... 172

java.util.Timer .......................................................................................................... 172

java.util.TimerTask .................................................................................................. 172

java.util.TimeZone ................................................................................................... 173

java.util.Vector ......................................................................................................... 174

Appendix D. The javax.microedition.io Package ....................................................... 175

javax.microedition.io.Connection ............................................................................ 175

javax.microedition.io.ContentConnection................................................................ 175

javax.microedition.io.Datagram ............................................................................... 175

javax..microedition.io.DatagramConnection............................................................ 176

javax.microedition.io.HttpConnection ..................................................................... 176

javax.microedition.io.InputConnection .................................................................... 177

javax.microedition.io.OutputConnection ................................................................. 178

javax.microedition.io.StreamConnection ................................................................. 178

javax.microedition.io.StreamConnectionNotifier..................................................... 178

javax.microedition.io.Connector .............................................................................. 178

javax.microedition.io.ConnectionNotFoundException ............................................ 179

Appendix E. The javax.microedition.lcdui Package .................................................. 180

javax.microedition.lcdui.Choice............................................................................... 180

javax.microedition.lcdui.CommandListener ............................................................ 181

javax.microedition.lcdui.ItemStateListener.............................................................. 181

javax.microedition.lcdui.Alert.................................................................................. 181

javax.microedition.lcdui.AlertType.......................................................................... 182

javax.microedition.lcdui.Canvas .............................................................................. 183

javax.microedition.lcdui.ChoiceGroup .................................................................... 184

javax.microedition.lcdui.Command ......................................................................... 184

javax.microedition.lcdui.DateField .......................................................................... 185

javax.microedition.lcdui.Display.............................................................................. 186

javax.microedition.lcdui.Displayable ....................................................................... 186

javax.microedition.lcdui.Font................................................................................... 187

javax.microedition.lcdui.Form ................................................................................. 187

javax.microedition.lcdui.Gauge................................................................................ 188

javax.microedition.lcdui.Graphics............................................................................ 188

javax.microedition.lcdui.Image ................................................................................ 189

javax.microedition.lcdui.ImageItem......................................................................... 190

javax.microedition.lcdui.Item................................................................................... 190

javax.microedition.lcdui.List.................................................................................... 190

javax.microedition.lcdui.Screen ............................................................................... 191

javax.microedition.lcdui.StringItem ......................................................................... 191

javax.microedition.lcdui.TextBox ............................................................................ 191

javax.microedition.lcdui.TextField .......................................................................... 192

javax.microedition.lcdui.Ticker................................................................................ 193

Appendix F. The javax.microedition.midlet Package ................................................ 194

javax.microedition.midlet.MIDlet ............................................................................ 194

javax.microedition.midlet.MIDletStateChangeException........................................ 194

Appendix G. The javax.microedition.rms Package ................................................... 195

javax.microedition.rms.RecordComparator ............................................................. 195

javax.microedition.rms.RecordEnumeration............................................................ 195

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