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Master Java 6 Programming with Black Book: Examples and Exercises



Java 6 Programming Black Book: A Comprehensive Guide for Java Developers




Introduction




If you are a Java developer who wants to master the latest features and enhancements of Java 6, then this book is for you. Java 6 Programming Black Book is a comprehensive guide that covers all aspects of Java programming, from the basics to the advanced topics. Whether you are a beginner or an expert, this book will help you learn and improve your Java skills.




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What is Java 6 Programming Black Book?




Java 6 Programming Black Book is a book written by Kogent Solutions Inc., a leading provider of IT solutions and services. The book was published by Dreamtech Press, a leading publisher of technical books in India. The book is divided into 18 chapters, each covering a different topic related to Java programming. The book has more than 1000 pages and contains over 250 examples and exercises.


Why should you read this book?




You should read this book if you want to:



  • Learn the fundamentals of Java programming, such as data types, operators, control structures, arrays, strings, etc.



  • Understand the concepts of object-oriented programming, such as classes, objects, inheritance, polymorphism, interfaces, abstract classes, etc.



  • Handle errors and exceptions in your code using try-catch-finally blocks, throws clause, custom exceptions, assertions, etc.



  • Use the built-in classes and interfaces of the Java API, such as collections, generics, input/output, networking, concurrency, etc.



  • Explore the new features and enhancements of Java 6, such as annotations, scripting, JDBC 4.0, Swing enhancements, etc.



  • Develop GUI applications using Swing components, layouts, events, listeners, dialogs, etc.



  • Create web applications using servlets, JSPs, filters, listeners, sessions, cookies, etc.



  • Use various frameworks and technologies for web development, such as Struts 2.0, Hibernate 3.0, Spring 2.5, JSF 1.2, etc.



  • Test and debug your code using various tools and techniques, such as JUnit 4.0, Log4j 1.2.15, Eclipse IDE 3.3.1.1 , etc.



What will you learn from this book?




By reading this book, you will learn how to:



  • Write efficient and elegant code using the best practices of Java programming.



  • Solve real-world problems using various algorithms and data structures.



  • Create user-friendly and interactive GUI applications using Swing.



  • Develop dynamic and scalable web applications using servlets, JSPs , frameworks ,and technologies.



  • Connect to databases and perform CRUD operations using JDBC.



  • Use annotations , scripting ,and reflection to enhance your code functionality and flexibility.



  • Use concurrency , threads ,and synchronization to create multithreaded applications.



  • Use input/output streams , files ,and sockets to perform data manipulation and communication.



  • Use collections , generics ,and enums to store and manipulate data efficiently.



  • Use various tools and techniques to test and debug your code effectively.



Features of Java 6 Programming Black Book




Covers the latest features and enhancements of Java 6




The book covers all the new features and enhancements that were introduced in Java 6, such as:



  • Annotations: A way to add metadata to your code that can be used by compilers , tools ,and frameworks.



  • Scripting: A way to integrate scripting languages , such as JavaScript , Ruby , Python ,etc., with Java code.



  • JDBC 4.0: A new version of JDBC that simplifies database connectivity and provides new features , such as automatic driver loading , rowsets , SQL XML ,etc.



  • Swing enhancements: New features and improvements in Swing components , such as JTable , JTree , JFileChooser , JColorChooser ,etc.



  • NIO.2: A new version of NIO that provides new features , such as asynchronous I/O , file system operations , file change notifications ,etc.



Provides practical examples and exercises for each topic




The book provides over 250 examples and exercises that illustrate the concepts and techniques discussed in each chapter. The examples are simple yet comprehensive and show how to apply the theory in practice. The exercises are designed to test your understanding and reinforce your learning. The solutions to the exercises are provided at the end of the book.


Explains the concepts in a clear and concise manner




The book explains the concepts in a clear and concise manner that is easy to follow and understand. The book uses simple language and avoids unnecessary jargon. The book also uses diagrams and tables to illustrate the concepts visually and make them more comprehensible.


Includes tips and tricks for effective Java programming




The book includes tips and tricks for effective Java programming that will help you write better code and avoid common errors and pitfalls. The tips and tricks are based on the author's experience and expertise in Java development and cover various topics such as performance optimization , memory management , coding style , best practices , etc.


Contents of Java 6 Programming Black Book




Chapter 1: Getting Started with Java




Introduction to Java




In this chapter, you will learn what is Java , why it was created , what are its features and benefits , how it works , what are its components , etc. You will also learn about the history and evolution of Java , the different versions and editions of Java , the role of Sun Microsystems and Oracle Corporation in developing and maintaining Java , etc.


Installing and configuring Java




In this chapter, you will learn how to install and configure Java on your system. You will learn how to download and install the JDK (Java Development Kit) , which contains all the tools and libraries required for developing and running Java applications. You will also learn how to set up the environment variables , such as JAVA_HOME , PATH , CLASSPATH , etc., that are needed for executing Java commands. You will also learn how to verify that your installation is successful by checking the version of your JDK .


Writing and running your first Java program




In this chapter, you will learn how to write and run your first Java program. You will learn how to use a text editor , such as Notepad , to create a source file that contains your Java code. You will also learn how to use the javac command to compile your source file into a bytecode file that can be executed by the JVM (Java Virtual Machine) . You will also learn how to use the java command to run your bytecode file and see the output on the console. You will also learn about the basic structure of a Java program , such as comments , package declaration , import statement , class declaration , main method , etc.


Chapter 2: Object-Oriented Programming in Java




Classes Classes and objects




In this chapter, you will learn about the concepts of classes and objects, which are the fundamental building blocks of object-oriented programming. You will learn how to define a class that represents a real-world entity or concept, such as a person, a car, a bank account, etc. You will also learn how to create objects that are instances of a class and have their own state and behavior. You will also learn how to use the dot operator (.) to access the fields and methods of an object.


Inheritance and polymorphism




In this chapter, you will learn about the concepts of inheritance and polymorphism, which are the key features of object-oriented programming. You will learn how to use inheritance to create subclasses that inherit the common attributes and behaviors of their superclasses. You will also learn how to use polymorphism to enable subclasses to override or redefine the methods of their superclasses. You will also learn how to use the keywords extends and implements to specify the inheritance relationships between classes and interfaces.


Interfaces and abstract classes




In this chapter, you will learn about the concepts of interfaces and abstract classes, which are used to define abstract types that specify the contracts or behaviors that classes must implement. You will learn how to use interfaces to declare methods that have no implementation and must be implemented by the classes that implement the interface. You will also learn how to use abstract classes to declare methods that have partial or default implementation and can be overridden or extended by the subclasses that extend the abstract class. You will also learn how to use the keywords interface and abstract to define interfaces and abstract classes.


Inner classes and anonymous classes




In this chapter, you will learn about the concepts of inner classes and anonymous classes, which are used to define classes within other classes or methods. You will learn how to use inner classes to create nested classes that have access to the members of their enclosing classes. You will also learn how to use anonymous classes to create unnamed classes that implement an interface or extend a class without creating a separate class definition. You will also learn how to use the keywords new and this to create instances of inner classes and anonymous classes.


Chapter 3: Exception Handling and Assertions in Java




What are exceptions and how to handle them




In this chapter, you will learn about the concept of exceptions, which are events that occur during the execution of a program that disrupt its normal flow. You will learn how to handle exceptions using try-catch-finally blocks, which allow you to catch and handle different types of exceptions, execute some cleanup code regardless of whether an exception occurs or not, and propagate exceptions to the caller method. You will also learn how to use the keywords try, catch, finally, and throw to handle exceptions.


Types of exceptions and their hierarchy




In this chapter, you will learn about the types of exceptions in Java, which are classified into two categories: checked exceptions and unchecked exceptions. You will learn how checked exceptions are those that must be handled or declared by the programmer using try-catch blocks or throws clause, while unchecked exceptions are those that do not need to be handled or declared by the programmer as they indicate programming errors or runtime conditions. You will also learn about the hierarchy of exceptions in Java, which is based on the inheritance relationship between the Exception class and its subclasses.


Using try-catch-finally blocks and throws clause




In this chapter, you will learn how to use try-catch-finally blocks and throws clause to handle checked exceptions in your code. You will learn how to use try-catch blocks to enclose the code that may throw an exception and catch different types of exceptions using multiple catch clauses. You will also learn how to use finally blocks to execute some code that must run regardless of whether an exception occurs or not, such as closing resources or releasing locks. You will also learn how to use throws clause to declare that a method may throw one or more exceptions and pass them to its caller method.


Creating and throwing your own exceptions




In this chapter, you will learn how to create and throw your own exceptions in your code. You will learn how to define custom exception classes that extend from either Exception class or one of its subclasses. You will also learn how to use the super constructor to initialize your custom exception class with a message or a cause. You will also learn how to use the throw keyword to create an instance of your custom exception class and throw it from your method.


Using assertions for debugging and testing




In this chapter, you will learn how to use assertions for debugging and testing your code. You will learn what are assertions and how they can help you verify certain conditions or assumptions in your code. You will also learn how to enable and disable assertions using command-line options or IDE settings. You will also learn how to use the assert keyword to write assertion statements that check boolean expressions Chapter 4: Java API Classes and Interfaces




Introduction to Java API




In this chapter, you will learn about the Java API, which is a collection of classes and interfaces that provide various functionalities and services for Java programmers. You will learn how to use the Java API documentation, which is a comprehensive and detailed reference of all the classes and interfaces in the Java API. You will also learn how to use the import statement to import the classes and interfaces from the Java API into your code.


Using collections and generics




In this chapter, you will learn how to use collections and generics, which are features that allow you to store and manipulate data efficiently and safely. You will learn how to use collections, which are data structures that can hold multiple objects of the same or different types. You will also learn how to use generics, which are a way to parameterize the types of collections and other classes and interfaces. You will also learn how to use the classes and interfaces in the java.util package, such as List, Set, Map, Collection, Iterator, etc.


Using input/output streams and files




In this chapter, you will learn how to use input/output streams and files, which are features that allow you to perform data manipulation and communication. You will learn how to use input/output streams, which are sequences of bytes that can be read from or written to various sources or destinations, such as files, sockets, memory, etc. You will also learn how to use files, which are objects that represent files or directories on a disk or a network. You will also learn how to use the classes and interfaces in the java.io package, such as InputStream, OutputStream, FileReader, FileWriter, File, etc.


Using networking and sockets




In this chapter, you will learn how to use networking and sockets, which are features that allow you to perform data communication over a network. You will learn how to use networking, which is a way to connect your program to other programs or devices on a network using various protocols and addresses. You will also learn how to use sockets, which are endpoints of communication between two programs or devices on a network. You will also learn how to use the classes and interfaces in the java.net package, such as URL, URLConnection , Socket , ServerSocket , etc.


Using concurrency , threads ,and synchronization




In this chapter, you will learn how to use concurrency , threads ,and synchronization , which are features that allow you to create multithreaded applications that can perform multiple tasks simultaneously or asynchronously. You will learn how to use concurrency , which is a way to execute multiple tasks in parallel or in an interleaved manner. You will also learn how to use threads , which are units of execution that can run concurrently or independently within a program. You will also learn how to use synchronization , which is a way to coordinate or control the access or modification of shared resources among multiple threads. You will also learn how to use the classes and interfaces in the java.lang and java.util.concurrent packages , Chapter 5: New Features and Enhancements of Java 6




Introduction to the new features and enhancements of Java 6




In this chapter, you will learn about the new features and enhancements that were introduced in Java 6, which was released in December 2006. You will learn how these features and enhancements improve the performance, functionality, and usability of Java programming. You will also learn how to use these features and enhancements in your code.


Using annotations




In this chapter, you will learn how to use annotations, which are a way to add metadata to your code that can be used by compilers, tools, and frameworks. You will learn how to use predefined annotations, such as @Override, @Deprecated, @SuppressWarnings, etc., that provide information or instructions to the compiler or the IDE. You will also learn how to create and use custom annotations, such as @Author, @Version, @Test, etc., that provide additional information or functionality to your code. You will also learn how to use the classes and interfaces in the java.lang.annotation package, such as Annotation, Retention, Target, etc.


Using scripting




In this chapter, you will learn how to use scripting, which is a way to integrate scripting languages, such as JavaScript, Ruby, Python, etc., with Java code. You will learn how to use the scripting API, which is a set of classes and interfaces that provide a common framework for interacting with scripting engines and scripts. You will also learn how to use the scripting engines, which are implementations of scripting languages that can execute scripts within a Java program. You will also learn how to use the classes and interfaces in the javax.script package, such as ScriptEngine, ScriptEngineManager , ScriptContext , Bindings , etc.


Using JDBC 4.0




In this chapter, you will learn how to use JDBC 4.0 , which is a new version of JDBC that simplifies database connectivity and provides new features and enhancements. You will learn how to use automatic driver loading , which is a feature that eliminates the need to manually load or register JDBC drivers using Class.forName() or DriverManager.registerDriver() methods. You will also learn how to use rowsets , which are scrollable and updatable result sets that can be disconnected from the database and serialized or transmitted over a network. You will also learn how to use SQL XML , which is a feature that allows you to manipulate XML data using SQL statements or JDBC methods.


Using Swing enhancements




In this chapter, you will learn how to use Swing enhancements , which are new features and improvements in Swing components , such as JTable , JTree , JFileChooser , JColorChooser , etc. You will learn how to use sorting and filtering , which are features that allow you to sort or filter the data in a JTable or a JTree using various criteria. You will also learn how to use drag-and-drop support , which is a feature that allows you to drag and drop data between Swing components or other applications. You will also learn how to use SwingWorker , which is a class that helps you perform long-running tasks in a background thread Chapter 6: Developing GUI Applications using Swing




Introduction to Swing




In this chapter, you will learn about Swing, which is a set of classes and interfaces that provide a rich and powerful framework for creating graphical user interface (GUI) applications in Java. You will learn how Swing is based on the Java Foundation Classes (JFC), which consist of four components: AWT, Swing, Java 2D, and Accessibility. You will also learn how Swing is built on top of AWT, which provides the basic functionality and platform independence for GUI components. You will also learn how Swing provides a pluggable look and feel (PLAF), which allows you to change the appearance and behavior of GUI components without changing the code.


Using Swing components




In this chapter, you will learn how to use Swing components, which are GUI elements that can be added to a container, such as a frame or a panel, to create a user interfa


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