Object Oriented Programming Through Java

by Krishna; P. Radha

• ISBN13: 9781420047929
• ISBN10: 1420047922
• Format: Hardcover
• Copyright: 2007-01-29
• Publisher: CRC Press

Summary

Java language is the favourite platform of software developers. Using Java to advantage depends on learning to use its object oriented, platform independent, security concerned and graphic intensive features effectively. This book can be used by students of Computer Science and Information Technology who study Java programming as part of their curriculum. Readers interested in learning object oriented Java programming on their own will also find the book self-explanatory and interesting.

Author Biography

Dr P Radha Krishna is Associate Professor at Institute for Development and Research in Banking Technology, Hyderabad

Table of Contents

Preface	p. vii
Object Oriented Programming	p. 1
Introduction to OOP	p. 1
Objects and Classes	p. 2
Characteristics of OOP	p. 4
Encapsulation	p. 5
Inheritance	p. 6
Polymorphism	p. 8
Difference between OOP and Procedure Oriented Programming	p. 11
Summary	p. 11
Benefits of OOP	p. 11
Drawbacks of OOP	p. 12
Challenges of OOP	p. 12
Objective type questions	p. 12
Exercises	p. 13
Answers	p. 14
Introduction to Java Programming	p. 15
Introduction	p. 15
Overview of Java technology	p. 15
A short history of the development of Java	p. 18
Java as a new paradigm in programming	p. 19
Features of Java	p. 19
Comparing Java and Other Languages	p. 22
Applications and Applets	p. 23
Simple applications using Java	p. 23
Other applications and applets	p. 24
Java Development Kit	p. 28
More Complex Programs	p. 29
Java Source File Structure	p. 30
Prerequisites for Compiling and Running Java Programs	p. 31
Objective type questions	p. 32
Exercises	p. 32
Answers	p. 32
Java Language Fundamentals	p. 33
The Building Blocks of Java	p. 33
Lexical tokens	p. 33
Literals	p. 34
White spaces	p. 37
Comments	p. 38
Data Types	p. 39
Integral data types	p. 39
Floating-point numbers	p. 40
Boolean data types	p. 40
Variable Declarations	p. 41
Declaring, initializing and using variables	p. 41
Variable types in Java	p. 41
Object reference variables	p. 43
Default values for member variables	p. 44
Initializing local variables of different data types	p. 45
Initializing local reference variables	p. 46
Wrapper Classes	p. 47
Operators and Assignment	p. 48
Operators	p. 48
Assignment	p. 49
Mathematical operators	p. 51
Relational operators	p. 53
Logical operators	p. 55
Bitwise operators	p. 56
Shift operators	p. 56
Ternary If-Else operator	p. 57
Comma operator+	p. 58
String operator+	p. 58
Operator precedence	p. 58
Casting operators	p. 59
Control Structures	p. 60
Block	p. 60
Loop	p. 61
Branching statements	p. 68
Arrays	p. 74
One-dimensional arrays	p. 74
Multi-dimensional arrays	p. 75
Strings	p. 77
Constructors of String class with character array and string object	p. 77
Constructors of String class with byte array	p. 78
Methods of the String class	p. 79
The StringBuffer Class	p. 82
Constructors of the StringBuffer class	p. 82
Objective type questions	p. 83
Exercises	p. 87
Answers	p. 88
Java as an OOP Language	p. 89
Defining Classes	p. 89
Creating instance and class variables	p. 89
Defining methods	p. 90
Knowing this	p. 92
Variable scope and method definitions	p. 94
Passing arguments to methods	p. 96
Class methods	p. 98
Overloading methods	p. 99
Constructor methods	p. 100
Inheritance, polymorphism and abstract classes	p. 104
Overriding methods	p. 108
Finalizer methods	p. 112
Modifiers	p. 113
Controlling access to methods and variables	p. 114
Method protection and inheritance	p. 117
Creating accessor methods	p. 117
Class variables and methods	p. 119
Finalizing classes, methods and variables	p. 122
Abstract classes and methods	p. 123
Packages	p. 126
Using packages	p. 127
Using package and class names in full	p. 127
The import command	p. 128
Name conflicts	p. 128
Creating packages	p. 129
Packages and class protection	p. 131
Interfaces	p. 133
Interfaces and classes	p. 133
Creating and extending interfaces	p. 133
Other uses of interfaces	p. 139
Objective type questions	p. 139
Exercises	p. 147
Answers	p. 147
Exception Handling	p. 148
Introduction	p. 148
Basics of Exception Handling in Java	p. 150
Exception Hierarchy	p. 152
Throwable class hierarchy	p. 152
Constructors and Methods in Throwable Class	p. 153
Constructors	p. 153
Methods	p. 154
Unchecked and Checked Exceptions	p. 155
Handling Exceptions in Java	p. 155
Try block	p. 156
Catch block	p. 156
Finally block	p. 158
Multiple catch blocks	p. 159
Nested try statements	p. 161
The keyword throw	p. 162
Exception and Inheritance	p. 163
Throwing User-defined Exceptions	p. 165
Redirecting and Rethrowing Exceptions	p. 167
Redirecting exceptions using throws	p. 167
Rethrowing an exception	p. 170
Advantages of the Exception-Handling Mechanism	p. 171
Objective type questions	p. 176
Exercises	p. 179
Answers	p. 180
Multithreading	p. 181
Introduction: an Overview of Threads	p. 181
Creating Threads	p. 182
Creating a new thread extending Thread	p. 182
Creating a thread implementing Runnable interface	p. 185
Stopping threads: the join() method	p. 187
Naming a thread	p. 188
Thread Life-cycle	p. 188
The newborn state	p. 188
The runnable state	p. 188
The running state	p. 189
The dead state	p. 190
The blocked state	p. 190
Manipulating threads	p. 190
Thread Priorities and Thread Scheduling	p. 192
setPriority and getPriority	p. 192
Time-slicing	p. 192
The scheduler	p. 192
Thread Synchronization	p. 193
Synchronized methods	p. 194
Synchronized statements	p. 196
Deadlocks	p. 198
Daemon Threads	p. 198
Thread Groups	p. 199
Communication of Threads	p. 201
Sample Programs	p. 206
Objective type questions	p. 210
Exercises	p. 212
Answers	p. 212
Files and I/O Streams	p. 213
An overview of I/O Streams	p. 213
Java I/O	p. 214
Character streams	p. 214
Byte streams	p. 216
Working with the I/O super-classes	p. 217
File Streams	p. 220
FileInputStream and FileOutputStreara	p. 222
Filter Streams	p. 224
DataInputStream and DataOutputStream	p. 225
PushbackInputStream	p. 227
RandomAccessFile	p. 228
Serialization	p. 230
Objective type questions	p. 233
Exercises	p. 235
Answers	p. 236
Applets	p. 237
Introduction	p. 237
JavaApplications Versus Java Applets	p. 239
Applet Life-cycle	p. 239
The init() method	p. 241
The start() method	p. 241
The stop() method	p. 242
The destroy() method	p. 242
The paint() method	p. 242
Working with Applets	p. 243
Running the applet using AppletViewer	p. 245
Running the applet using the web browser	p. 246
The HTML APPLET Tag	p. 248
Attributes in the applet tag	p. 248
Passing parameters to applets	p. 249
The java.Applet package	p. 251
Sample Programs	p. 253
Objective type questions	p. 259
Exercises	p. 261
Answers	p. 261
Database Handling using JDBC	p. 262
An Overview of DBMS	p. 262
Database operations	p. 263
Database application architectures	p. 263
JDBC Architecture	p. 266
Interfaces in JDBC API	p. 266
Types of database driver	p. 267
Working with JDBC	p. 267
Accessing a database using JDBC	p. 267
Registering the driver	p. 268
Connecting to the database	p. 268
Processing Queries	p. 270
The Statement class	p. 271
Accessing rows returned from a query	p. 273
Accessing column data	p. 273
The method PreparedStatement	p. 277
The method CallableStatement	p. 278
The Transactions Commit and Rollback	p. 279
Handling Exceptions	p. 280
Mapping Database Types to Java	p. 281
Java format types	p. 281
Accessing Metadata	p. 282
Methods in the class ResultSetMetadata	p. 282
The class DatabaseMetadata	p. 283
Sample Programs to Handle Databases	p. 284
Objective type questions	p. 294
Exercises	p. 296
Answers	p. 297
The Abstract Window Toolkit	p. 298
Introduction	p. 298
Basic Classes in AWT	p. 299
The class Graphics	p. 299
Colours	p. 299
Font	p. 300
Drawing with Graphics Class	p. 300
Class Hierarchy of AWT	p. 301
Event Handling	p. 302
Adapter classes	p. 304
AWT Controls	p. 305
Labels	p. 305
Buttons	p. 305
CheckBox	p. 307
CheckboxGroup for creating Radio Buttons	p. 308
Choice control	p. 310
List control	p. 311
TextField control	p. 313
Scrollbars	p. 314
Layout Managers	p. 315
The FlowLayout manager	p. 316
The GridLayout manager	p. 316
The BorderLayout manager	p. 317
The CardLayout manager	p. 318
The Java2D API	p. 319
Java2D Shapes	p. 319
Texture paint and gradient paint:	p. 323
Objective type questions	p. 327
Exercises	p. 329
Answers	p. 329
Swings	p. 330
Introduction	p. 330
The Swing Packages	p. 331
The Hierarchy of Swing Classes	p. 332
JPopupMenu	p. 332
JDesktopPane and JInternalFrame	p. 336
Advanced Layout Managers	p. 340
The BoxLayout manager	p. 342
The GridBagLayout manager	p. 343
Additional Swing Components	p. 348
The Jlist class	p. 348
The JcomboBox class	p. 351
Constructing menus	p. 354
The JTextArea class	p. 359
The JTable control	p. 365
Customizing the frame and its look-and-feel	p. 366
The JToolBar class	p. 372
The JSlider control	p. 375
The JProgressBar class	p. 378
Borders	p. 382
Objective type questions	p. 385
Exercises	p. 387
Answers	p. 387
Servlets	p. 388
Introduction	p. 388
Advantages of servlets	p. 389
Writing servlets	p. 389
How to Run Servlets	p. 391
Running HtmlToServlet	p. 392
The Life-cycle of the Servlet	p. 393
Instantiating and initializing a servlet-the init() method	p. 394
Handling client requests and responses-the service() method	p. 395
Destroying the Servlet-the destroy() method	p. 395
Servlet API	p. 396
Interfaces	p. 397
Classes	p. 397
The GenericServlet class	p. 397
The HttpServlet class	p. 398
Multi-tier Applications using JDBC from a Servlet	p. 404
Writing JDBC/Servlet	p. 404
A sample JDBC/Servlet application	p. 406
Additional Capabilities of HTTP Servlets	p. 408
Objects of the HttpServletRequest class	p. 409
Objects of the HttpServletResponse class	p. 409
Examples of GET and POST Requests	p. 410
Session Management	p. 412
Sample Programs	p. 414
Objective type questions	p. 421
Exercises	p. 423
Answers	p. 424
Networking and Remote Method Invocation	p. 425
Introduction to Networking	p. 425
Understanding Ports	p. 426
Networking Classes in the JDK	p. 427
Basics of sockets	p. 427
Simple client-server programming	p. 428
Reading from and writing to a socket	p. 429
Introduction to RMI	p. 432
RMI Architecture	p. 433
Proxy layer or stub/skeleton layer	p. 435
Remote reference layer	p. 435
Transport layer	p. 435
Implementing Remote Class and Interface	p. 435
Programming a client	p. 437
Programming a server	p. 437
Security	p. 439
Sample Programs	p. 440
Objective type questions	p. 448
Exercises	p. 449
Answers	p. 450
New Language Features of Java 1.5	p. 451
Introduction	p. 451
Generics	p. 452
The Enhanced for Loop	p. 453
Autoboxing and Unboxing	p. 455
Type-Safe Enumerations	p. 456
Variable-Length Arguments	p. 456
Formatted I/O	p. 457
Static Import	p. 458
Metadata (Annotations)	p. 459
Sample Programs	p. 460
Index	p. 467
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