Implementation of mobile Jabber-Client chat application: using J2ME platform - Binus e-Thesis

  

INTERNATIONAL UNDERGRADUATE PROGRAM

BINA NUSANTARA UNIVERSITY

  Major Computer Science Bachelor of Computer Science Thesis

  Even Semester 2007

  

IMPLEMENTATION OF MOBILE JABBER-CLIENT CHAT

APPLICATION:USING J2ME PLATFORM

  Sylvia W (0700676623)

  Abstract

  The objective of this thesis is to implement mobile client instant messaging application as an alternative communication means at PT AdIns. This application is created using J2ME platform and employs XMPP (Extensible Messaging and Presence Protocol) as the protocol. With the proposed system design, author aims to improve the communication ways in PT AdIns so that it can run more efficient and at low cost.

  The method author used is by first getting the requirement specification from the company, continued by performing analysis, designing the conceptual design for the application then implement ing and testing the application.

  As the result, this application is able to perform basic function of instant messaging like sending message, reading message, adding contact, accepting or refusing subscription request and see contact’s status. Additional features like editing user profile, viewing contact’s profile, sound effect, offline message, group ability, and connecting to other IM server: Msn and Yahoo are added to enhance the functionality.

  In conclusion, by applying this mobile chat application the company will able to improve security, mobility, scalability and collaborative works among the employees. Security is achieved through the use of private IM server and client where mobility is accomplished through the implementation in mobile device. Since the application can connect to MSN and Yahoo server, the scalability of company’s communication is improved. Moreover, the collaborative work can be performed because the application unites all the employees at PT AdIns and allows them to chat with several people at the same time.

  Keyword J2ME, XMPP, CLDC.

  

PREFACE

  This research-based project serves as an academic finale for undergraduate students of Bina Nusantara International University. This thesis is presented as an academic project based paper as the performance of significant and acceptable research and scholarly work, for obtaining Bachelor degree at Computer Science program, Education Level Strata-1.

  The author would like to express her gratitude to everyone who has assisted in the completion of this thesis. First and foremost, the author would like to express her deepest thanks to the Almighty, who has blessed her with the strength and protection to complete this thesis on time.

  The author also would like to thank to the following people for their support and contribution in the development of this thesis:

• Mr. Prof. Dr. Gerardus Polla, M.App.Sc, the Rector of Bina Nusantara University •

  Mr. Firdaus Alamsjah, Ph.D., the Executive Director of Joseph Wibowo Center

• Mr. Minaldi Loeis, M.Sc., MM.,MBA, the Program Director of Bina Nusantara International
• Mr. Ir. Tri A. Budiono, MIT., the Head of School of Computer Science Binus International and author’s thesis supervisor, for his guidance and assistance.
• Mr Raymondus Kosala, Ph. D., as author’s thesis supervisor, for his guidance and assistance.
• All personal in team MAX of PT. AdIns, who had helped author through the progress of this thesis

• Author’s families and friends who have support and helped us during the thesis.
• Author’s peers, who have provided her with suggestions, ideas, comments, critiques and never-ending support.
• Any other parties that have helped author, in a significant manner or not, in the comple tion of this thesis.

  The author is aware of the various imperfections of this paper presentation. Subsequently, the author would like to welcome any critiques and suggestion which will contribute any development of this thesis in the future. Lastly, the author really hopes that this thesis will be beneficial in communication development in Indonesia.

  Jakarta, 20 July 2007 Sylvia Wirianata

  Author

  

TABLE OF CONTENT

TITLE PAGE .....................................................................................................................I

CERTIFICATION OF APPROVAL ..............................................................................II

ABSTRACT......................................................................................................................III

PREFACE.........................................................................................................................IV

TABLE OF CONTENT...................................................................................................VI

LIST OF TABLES ............................................................................................................X

LIST OF FIGURE ...........................................................................................................XI

  

CHAPTER 1 .......................................................................................................................1

INTRODUCTION ...............................................................................................................1

  1.1 Background ....................................................................................................................1

  1.2 Scope..............................................................................................................................3

  1.3 Assumptions...................................................................................................................4

  1.4 Purpose...........................................................................................................................5

  1.5 Structure .........................................................................................................................5 THEORETICAL BACKGROUND.....................................................................................7

  2.1 Mobile Instant Messaging..............................................................................................7

  2.2 Internet ...........................................................................................................................8

  2.2.1 Internet Structure.................................................................................................... 9

  2.2.2 Internet Provider .................................................................................................... 9

  2.2.3 Internet Service .................................................................................................... 10

  2.2.4 Language on Internet ........................................................................................... 11

  2.2.5 Internet Access ..................................................................................................... 11

  2.2.6 GPRS .................................................................................................................... 12

  2.3 Technology...................................................................................................................14

  2.3.1 Wildfire ................................................................................................................ 14

  2.3.2 XMPP................................................................................................................... 14

  2.3.2.1 RFC (Request for Commands)...................................................................... 16

  2.3.2.1.1 RFC 3920 ............................................................................................... 16

  2.3.2.1.2 RFC 3921 ............................................................................................... 18

  2.3.2.2 XML.............................................................................................................. 18

  2.3.2.3 Jabber ............................................................................................................ 19

  2.3.2.3.1 Jabber Architecture ................................................................................ 21

  2.3.2.3.2 How Jabber Works................................................................................. 22

  2.3.3 Java ....................................................................................................................... 23

  2.3.3.1 Java Platform................................................................................................. 24

  2.3.3.2 Feature of Java .............................................................................................. 25

  2.3.4 J2ME .................................................................................................................... 26

  2.3.4.1 J2ME Architecture ........................................................................................ 27

  2.3.4.2 Configuration................................................................................................ 28

  2.3.4.2.1 CDC ....................................................................................................... 28

  2.3.4.2.2 CLDC ..................................................................................................... 29

  2.3.4.2.2.1 Target device characteristic ............................................................ 29 2.3.4.2.2.2 Security Model................................................................................ 30 2.3.4.2.2.3 Application Management ................................................................ 31 2.3.4.2.2.4 Language differences ...................................................................... 31 2.3.4.2.2.5 KVM ............................................................................................... 32 2.3.4.2.2.6 Included class libraries.................................................................... 34

  2.3.4.3 Profile............................................................................................................ 34

  2.3.4.4 MIDP ............................................................................................................. 35

  2.3.4.4.1 MIDlet (MIDP Application) .................................................................. 40 2.3.4.4.1.1 MIDlet States .................................................................................. 41 2.3.4.4.1.2 MIDlet Lifecycle............................................................................. 43

  2.3.4.4.2 MIDlet Suites ......................................................................................... 44 2.3.4.4.2.1 JAD ................................................................................................. 45 2.3.4.4.2.2 JAR ................................................................................................. 45

  2.3.5 Symbian OS ......................................................................................................... 45

  2.3.6 S60 Platform ........................................................................................................ 47

  2.3.7 Connection........................................................................................................... 47

  2.3.7.1 Thread ........................................................................................................... 48

  2.3.7.3 Socket (TCP/IP) connection ......................................................................... 50

  2.3.7.4 Datagram connection .................................................................................... 52

  2.3.7.5 HTTP connection.......................................................................................... 52

  2.4 Waterfall Model Methodology.....................................................................................53

  2.5 Modeling Tools ............................................................................................................54

  2.5.1 Data Flow Diagram.............................................................................................. 55

  2.5.2 Use Case Diagram................................................................................................ 55

  2.5.3 Use Case Narrative ............................................................................................... 56

  2.5.4 Activity Diagram.................................................................................................. 57

  

CHAPTER 3 .....................................................................................................................59

PROBLEM ANALYSIS ....................................................................................................59

  3.1 Organizational Structure ..............................................................................................59

  3.2 Company History.........................................................................................................60

  3.3 Analysis of Current Situation.......................................................................................61

  3.4 Existing Problems ........................................................................................................63

  3.5 Alternative Solution.....................................................................................................64

  

CHAPTER 4 .....................................................................................................................70

DESIGN OF THE PROPOSED SYSTEM ........................................................................70

  4.1 Proposed System Design..............................................................................................70

  4.1.1 Create New Login Profile .................................................................................... 71

  4.1.2 Edit Existing Login Profile .................................................................................. 72

  4.1.3 Delete Existing Login Profile .............................................................................. 72

  4.1.4 Sign In.................................................................................................................. 73

  4.1.5 Send Message ....................................................................................................... 74

  4.1.6 Receive Message.................................................................................................. 75

  4.1.7 Send Offline Message .......................................................................................... 75

  4.1.8 Receive Offline Message ..................................................................................... 76

  4.1.9 Choose Emoticon................................................................................................. 76

  4.1.10 Change Status ..................................................................................................... 76

  4.1.11 Add Contact ....................................................................................................... 77

  4.1.12 Accept Subscription Request ............................................................................. 78

  4.1.13 Refuse Subscription Request ............................................................................. 78

  4.1.14 Search Contact ................................................................................................... 78

  4.1.15 Remove Contact ................................................................................................. 79

  4.1.16 Edit User Profile................................................................................................. 80

  4.1.17 View Contact’s Profile....................................................................................... 80

  4.1.18 Create Group ...................................................................................................... 80

  4.1.19 Change Contact’s Group .................................................................................... 81

  4.1.20 Connect to MSN or Yahoo! Server.................................................................... 81

  4.1.21 Disconnect from MSN or Yahoo! Server .......................................................... 82

  4.1.22 Turn On / Off Sound .......................................................................................... 82

  4.1.23 Sign Out ............................................................................................................. 83

  4.2 Use Case.......................................................................................................................83

  4.2.1 Use Case Diagram................................................................................................ 83

  4.2.2 Use Case Narrative ............................................................................................... 85

  4.3.1 Context Data Flow Diagram .............................................................................. 109

  4.3.2 Detailed Data Flow Diagram ............................................................................. 110

  4.4 Activity Diagram........................................................................................................122

  4.4.1 Create New Login Profile Activity Diagram..................................................... 123

  4.4.2 Edit Existing Login Profile Activity Diagram................................................... 124

  4.4.3 Delete Existing Login Profile Activity Diagram ............................................... 125

  4.4.4 Sign In Activity Diagram................................................................................... 126

  4.4.5 Send Message Activity Diagram ....................................................................... 127

  4.4.6 Receive Message Activity Diagram................................................................... 128

  4.4.7 Send Offline Message Activity Diagram........................................................... 129

  4.4.8 Receive Offline Message Activity Diagram...................................................... 130

  4.4.9 Choose Emoticon Activity Diagram.................................................................. 131

  4.4.10 Change Status Activity Diagram ..................................................................... 131

  4.4.11 Add Contact Activity Diagram ........................................................................ 132

  4.4.12 Accept Subscription Request Activity Diagram.............................................. 133

  4.4.13 Refuse Subscription Request Activity Diagram .............................................. 134

  4.4.14 Search Contact Activity Diagram .................................................................... 134

  4.4.15 Remove Contact Activity Diagram.................................................................. 135

  4.4.16 Edit User Profile Activity Diagram ................................................................. 136

  4.4.17 View Contact’s Profile Activity Diagram........................................................ 137

  4.4.18 Create Group Activity Diagram....................................................................... 138

  4.4.19 Change Contact’s Group Activity Diagram..................................................... 139

  4.4.20 Connect to Other IM Server Activity Diagram................................................ 140

  4.4.21 Disconnect From Other Server Activity Diagram ........................................... 141

  4.4.22 Turn On/ Off Sound Activity Diagram............................................................ 142

  4.4.23 Sign out Activity Diagram............................................................................... 142

  4.5 User Interface Diagram..............................................................................................143

  4.5.1 Input Design....................................................................................................... 143

  4.5.1.1 Main Menu Form ........................................................................................ 143

  4.2.1.2 Sign In Form ............................................................................................... 144

  4.2.1.3 Login Profile Form ..................................................................................... 145

  4.2.1.4 Contact List Form ....................................................................................... 146

  4.2.1.5 Chat Form ................................................................................................... 147

  4.2.1.5 My Status Form........................................................................................... 148

  4.2.1.6 Add Contact Form....................................................................................... 149

  4.2.1.7 Request Approval Form.............................................................................. 150

  4.2.1.8 Search Contact Form................................................................................... 150

  4.2.1.9 Remove Contact Form ................................................................................ 151

  4.2.1.10 Edit User Profile Form.............................................................................. 152

  4.2.1.11 View Contact’s Profile Form.................................................................... 153

  4.2.1.12 Group Form............................................................................................... 153

  4.2.1.1 Other IM Server Form ................................................................................ 155

  4.5.2 Output Design .................................................................................................... 155

  4.5.3 Form Navigation Diagram ................................................................................. 157

  4.6 Implementation of XMPP RFC for Client-Server Connection..................................158

  IMPLEMENTATION AND TESTING ..........................................................................165

  5.1 System Specification..................................................................................................165

  5.2 Operational Procedures..............................................................................................166

  5.3 Screen shots................................................................................................................167

  5.4 Test Case ....................................................................................................................198

  

CHAPTER 6 ...................................................................................................................231

DISCUSSION ..................................................................................................................231

  6.1 Results ........................................................................................................................231

  6.1.1 Instant Messaging Support Collaborative Works .............................................. 232

  6.1.2 Other Connection............................................................................................... 234

  6.2 Consideration in Designing the System.....................................................................234

  6.2.1 Structured Approach Consideration................................................................... 234

  6.2.2 Group Issues....................................................................................................... 236

  6.3 Challenges in Creating Chat Application ..................................................................237

  6.4 Experiment .................................................................................................................239

  6.5 Questionnaire .............................................................................................................240

  6.6 Comparison to IM+ ....................................................................................................251

  6.6.1 Comparison based on Functionalities ................................................................ 251

  6.6.2 Comparison based on Graphical User Interface (GUI)...................................... 253

  6.6.3 General Conclusion of the Comparison ……………………………………… 259

  

CHAPTER 7 ...................................................................................................................260

CONCLUSION AND RECOMMENDATION...............................................................260

  7.1 Conclusion .................................................................................................................260

  7.2 Recommendation .......................................................................................................261

  

REFERENCES ...............................................................................................................263

BIOGRAPHY …………………………………………………………………………271

  

LIST OF TABLES

Table 2.1 MIDP Hardware Requirement .......................................................................... 36Table 2.2 Software Environment ...................................................................................... 36Table 2.3 MIDP 2.0 Specification .................................................................................... 39Table 3.1 Price of CDMA and GSM providers ................................................................ 64Table 3.2 Price of GPRS for GSM provider ..................................................................... 66Table 3.3 Comparison Tables of CDMA and Mobile IM Application............................. 66

  

LIST OF FIGURE

Figure 2.1 Internet Structure ............................................................................................... 9Figure 2.2 Jabber Architecture.......................................................................................... 21Figure 2.3 How Jabber Works .......................................................................................... 23Figure 2.4 Java code goes through two stages: compilation and interpretation ............... 24Figure 2.5 The different editions of Java suit different hardware platform...................... 26Figure 2.6 General Architecture........................................................................................ 27Figure 2.7 The Java sandbox............................................................................................. 31Figure 2.8 MIDlet life cycle.............................................................................................. 44Figure 2.9 MIDlet suites ................................................................................................... 44Figure 2.10 Structure of Symbian OS............................................................................... 46Figure 2.11 Connection..................................................................................................... 48Figure 2.12 TCP/IP Concept ............................................................................................. 51Figure 2.13 Waterfall Model............................................................................................. 54Figure 3.1 Organizational Structure.................................................................................. 59Figure 3.3 Contact’s Status Enhance Cooperation ........................................................... 68Figure 4.1 Chat Application Use Case Model Diagram ................................................... 84Figure 4.2 Create New Login Profile Use Case Narrative ................................................ 86Figure 4.3 Edit Existing Login Profile Use Case Narrative .............................................. 87

  Figure 4.4Delete Existing Login Profile Use Case Narrative ........................................... 88

Figure 4.5 Sign in Use Case Narrative .............................................................................. 89Figure 4.6 Send Message Use Case Narrative .................................................................. 90Figure 4.7 Receive Message Use Case Narrative ............................................................. 91Figure 4.8 Send Offline Message Use Case Narrative ..................................................... 93Figure 4.9 Receive Offline Message Use Case Narrative................................................. 93Figure 4.10 Choose Emoticon Use Case Narrative .......................................................... 94Figure 4.11 Change Status Use Case Narrative ................................................................ 95Figure 4.12 Add Contact Use Case Narrative................................................................... 97Figure 4.13 Accept Subscription Request Use Case Narrative ......................................... 97Figure 4.14 Refuse Subscription Request Use Case Narrative ......................................... 98Figure 4.15 Search Contact Use Case Narrative............................................................... 99Figure 4.16 Remove Contact Use Case Narrative .......................................................... 100Figure 4.17 Edit User Profile Use Case Narrative .......................................................... 101Figure 4.18 View Contact’s Profile Use Case Narrative ................................................ 102Figure 4.19 Create New Group Use Case Narrative ....................................................... 103Figure 4.20 Change Contact’s Group Use Case Narrative ............................................. 104Figure 4.21 Connect to MSN or Yahoo! Server Use Case Narrative ............................. 106Figure 4.22 Disconnect from MSN or Yahoo! Server Use Case Narrative .................... 107Figure 4.23 Turn On/ Off Sound Use Case Narrative .................................................... 107Figure 4.24 Sign out Use Case Narrative ........................................................................ 108Figure 4.25 Context Data Flow Diagram........................................................................ 109Figure 4.26 Data Flow Diagram Level 0 ........................................................................ 110Figure 4.27 DFD Level 1: Create New Login Profile .................................................... 111Figure 4.28 DFD Level 1: Edit Existing Login Profile .................................................. 111Figure 4.29 DFD Level 1: Delete Existing Login Profile............................................... 112Figure 4.30 DFD Level 1: Sign In .................................................................................. 113Figure 4.31 DFD Level 1: Send Message ....................................................................... 114Figure 4.32 DFD Level 1: Receive Message .................................................................. 114Figure 4.33 DFD Level 1: Send Offline Message .......................................................... 115Figure 4.34 DFD Level 1: Read Offline Message .......................................................... 115Figure 4.35 DFD Level 1: Choose Emoticon ................................................................. 116Figure 4.36 DFD Level 1: Add Contact.......................................................................... 116Figure 4.37 DFD Level 1: Accept Subscription Request ............................................... 117Figure 4.38 DF D Level 1: Refuse Subscription Request................................................ 117Figure 4.39 DFD Level 1: Search Contact...................................................................... 118Figure 4.40 DFD Level 1: Remove Contact ................................................................... 118Figure 4.41 DFD Level 1: Edit User Profile ................................................................... 119Figure 4.42 DFD Level 1: View Contact’s Profile ......................................................... 119Figure 4.43 DFD Level 1: Change Contact’s Group ...................................................... 120Figure 4.44 DFD Level 1: Create Group ........................................................................ 120Figure 4.46 DFD Level 1: Disconnect from MSN or Yahoo! Server............................. 121Figure 4.47 DFD Level 1: Turn On / Off Sound ............................................................ 122Figure 4.48 DFD Level 1: Sign Out ................................................................................ 122Figure 4.49 Activity Diagram: Create New Login Profile ............................................. 123Figure 4.50 Activity Diagram: Edit Existing Login Profile ........................................... 124Figure 4.51 Activity Diagram: Delete Existing Login Profile........................................ 125Figure 4.52 Activity Diagram: Sign in ........................................................................... 126Figure 4.53 Activity Diagram: Send Message ................................................................ 127Figure 4.54 Activity Diagram: Receive Message ........................................................... 128Figure 4.55 Activity Diagram: Send Offline Message ................................................... 129Figure 4.56 Activity Diagram: Receive Offline Message .............................................. 130Figure 4.57 Activity Diagram: Choose Emoticon .......................................................... 131Figure 4.58 Activity Diagram: Change Status ................................................................ 131Figure 4.59 Activity Diagram : Add Contact.................................................................. 132Figure 4.60 Activity Diagram: Accept Subscription Request ........................................ 133Figure 4.61 Activity Diagram: Refuse Subscription Request......................................... 134Figure 4.62 Activity Diagram: Search Contact............................................................... 134Figure 4.63 Activity Diagram: Remove Contact ............................................................ 135Figure 4.64 Activity Diagram: Edit User Profile ............................................................ 136Figure 4.65 Activity Diagram: View Contact’s Profile .................................................. 137Figure 4.66 Activity Diagram: Create Group ................................................................. 138Figure 4.67 Activity Diagram: Change Contact’s Group ............................................... 139Figure 4.68 Activity Diagram: Connect to MSN or Yahoo! Server ............................... 140Figure 4.69 Activity Diagram: Disconnect to MSN or Yahoo! Server .......................... 141Figure 4.70 Activity Diagram: Turn On / Off Sound ..................................................... 142Figure 4.71 Activity Diagram: Sign out ......................................................................... 142Figure 4.72 UI Design for Main Menu Form ................................................................. 143Figure 4.73 UI Design fo r Sign In Form......................................................................... 144Figure 4.74 UI Design for Login Profile Form............................................................... 145Figure 4.75 UI Design for Contact List Form................................................................. 146Figure 4.76 UI Design for Chat Form............................................................................. 147Figure 4.77 UI Design for Change Status Form ............................................................. 148Figure 4.78 UI Design for Add Contact Form................................................................ 149Figure 4.79 UI Design for Request Approval Form ....................................................... 150Figure 4.80 UI Design for Search Contact Form............................................................ 150Figure 4.81 UI Design for Remove Contact Form ......................................................... 151Figure 4.82 UI Design for Edit User Profile Form ......................................................... 152Figure 4.83 UI Design for View Contact’s Profile Form ............................................... 153Figure 4.84 UI Design for Group Form.......................................................................... 153Figure 4.85 UI Design for Create New Group Form...................................................... 154Figure 4.86 UI Design for Other IM Server Form.......................................................... 155Figure 4.87 Output Design.............................................................................................. 156Figure 4.88 Form Navigation Diagram........................................................................... 157Figure 5.1 Screen Shot: Main Menu Form and About Form.......................................... 167Figure 5.2 Screen Shot: Sign In Form and Login Profile Form...................................... 168Figure 5.4 Screen Shot: Create New Login Profile ........................................................ 169Figure 5.5 Screen shot: Errors in Creating Login Profile ............................................... 170Figure 5.6 Screen Shot: Success creating login profile .................................................. 170Figure 5.7 Screen Shot: Edit Existing Login Profile Form............................................. 171Figure 5.8 Screen Shot: Process of Editing Login Profile .............................................. 171Figure 5.9 Screen Shot: Success Deleting Login Profile ................................................ 172Figure 5.10 Screen Shot: Connect to the System............................................................ 173Figure 5.11 Screen Shot: Error Connect to the System .................................................. 173Figure 5.12 Screen Shot: Contact List Form .................................................................. 174Figure 5.13 Screen Shot: Change Status to Away.......................................................... 174Figure 5.14 Screen Shot: Alert of Wrong Contact’s Account Format............................ 175Figure 5.15 Screen Shot: Add New Contact................................................................... 176Figure 5.16 Screen Shot: Alert of Misplacing Contact ................................................... 176Figure 5.17 Screen Shot: Search Contact with empty keyword or “*” keyword .......... 177Figure 5.18 Screen Shot: Search Contact with “sa” as the keyword ............................. 177Figure 5.19 Screen Shot: Add Contact from Search Contact Form................................ 178Figure 5.20 Screen Shot: Remove Contact ..................................................................... 179Figure 5.21 Screen Shot: Alert for Choosing besides Jabber Contact............................ 179Figure 5.22 Screen Shot: Choosing Group Command (for Jabber Contact) .................. 180Figure 5.23 Screen Shot: Changing Satyo’s Group from Friend to Max ....................... 181Figure 5.24 Screen Shot: Create New Group”Partner” .................................................. 181Figure 5.25 Screen Shot: Alert for Invalid Group name and No Contact is checked ..... 182Figure 5.26 Screen Shot: Error Alert in the Process of Connecting to Other IM Server 183Figure 5.27 Screen Shot: Connect to MSN server.......................................................... 183Figure 5.28 Screen Shot: MSN contacts has been added to contact list ........................ 184Figure 5.29 Screen Shot: Connect to Yahoo Server ....................................................... 184Figure 5.30 Screen Shot: Yahoo contacts has been added to contact list ....................... 185Figure 5.31 Screen Shot: Disconnect Command is un-allowed ..................................... 185Figure 5.32 Screen Shot: Disconnect from MSN .......................................................... 186Figure 5.33 Screen Shot: Accepting Subscription Request ............................................ 187Figure 5.34 Screen Shot: Refusing Subscription Request .............................................. 187Figure 5.35 Screen Shot: Error Generated for Mismatch Group .................................... 188Figure 5.36 Screen Shot: Adding Yahoo Contact.......................................................... 188Figure 5.37 Screen Shot: Subscription Request is delivered to Contact......................... 189Figure 5.38 Screen Shot: User and contact may see each other status ........................... 189Figure 5.39 Screen Shot: Edit My Profile....................................................................... 190Figure 5.40 Screen Shot: View Profile of UserMax1 ..................................................... 190Figure 5.41 Screen Shot: Usermax2 sends message to usermax1 .................................. 191Figure 5.42 Screen Shot: Usermax1 receive the message then reply ............................. 191Figure 5.43 Screen Shot: Message is delivered to Usermax2 ......................................... 192Figure 5.44 Screen Shot: Usermax1 has gone offline..................................................... 192Figure 5.45 Screen Shot: Chat with Yahoo contact........................................................ 193Figure 5.46 Screen Shot: Choose Emoticon from Emoticon Table ................................ 194Figure 5.47 Screen Shot: Go Directly to Usermax1 ....................................................... 194Figure 5.48 Screen Shot: Closing Chat Window ............................................................ 195Figure 5.50 Screen Shot: Receive Offline Message ....................................................... 196Figure 5.51 Screen Shot: Sign Out from Server ............................................................. 196Figure 5.52 Screen Shot: User Status Has Changed to Offline ...................................... 197Figure 6.1 Jabber Architecture........................................................................................ 236Figure 6.2 Chat Box using Custom Item Component ..................................................... 237Figure 6.3 Employee’s preferred communication mean at the office............................. 242Figure 6.4 Employee’s Preferred Communication Device Outside of the Office .......... 243Figure 6.5 Other Instant Messenger Application that Employee Ever Use .................... 244Figure 6.6 Graphical User Interface of My Chat Application ........................................ 245Figure 6.7 Times needed to use this Client Chat Application ........................................ 245Figure 6.8 Limitation of 400 characters for each message sent...................................... 246Figure 6.9 The availability of 24 different emoticon images.......................................... 247Figure 6.10 The most important and most useful of additional feature .......................... 247Figure 6.11 Client chat application helps employees in doing their jobs ....................... 248Figure 6.12 Chat Application Improves Collaboration Work ........................................ 249Figure 6.13 Mobile Chat Application as an Alternative Communication Means ........... 250Figure 6.14 Comparison of Functionality....................................................................... 253Figure 6.15 IM+ Login Form.......................................................................................... 253Figure 6.16 Jabber Client Chat Application Login Form ............................................... 253Figure 6.17 IM+ Contact List ......................................................................................... 255Figure 6.18 Jabber Client Chat Application Contact List ............................................... 255Figure 6.19 IM + Dialog Window .................................................................................. 256Figure 6.20 Jabber Client Chat Application Chat Form ................................................. 256Figure 6.21 IM+ and Jabber Client Chat Application Emoticon Table .......................... 257Figure 6.22 IM+ and Jabber Client Chat Application Status GUI.................................. 257Figure 6.23 IM+ and Jabber-Client Chat Application Contact Profile ........................... 258

  Figure6.24 IM+ and Jabber-Client Chat Application Request Approval ....................... 258