book

The class of Java

Name: The class of Java
Author: Pravin Jain
ISBN: 9788131755440

by Pravin Jain

August 2010

Intermediate to advanced

492 pages

13h 39m

English

Pearson India

Read now

Unlock full access

Cover
Title Page
Contents
Preface
Foreword
About the Author
1. Object-oriented Programming and Introduction to Java
1.1 Why is Java so Popular?1.1.1 Platform Independent1.1.2 Applets and Servlets for the Web1.1.3 Object-oriented Programming1.1.4 Easy1.2 Java Community1.3 Rich APILessons LearnedExercises
2. Creating an Application in Java
2.1 Installing JDK2.2 The HelloWorld Sample Application2.3 Compiling Java Files2.4 Executing a Java Application2.4.1 Using Command Line Arguments2.5 Various Tools, Part of JDK2.5.1 javadoc Utility and Documentation CommentsLessons LearnedExercises
3. Data Types
3.1 Primitive Data Types3.1.1 boolean Data Type3.1.2 Numeric Data Types3.1.3 Specifying Constants3.2 Unicode Escapes in Java Source Code3.3 Reference Data Types3.3.1 Arrays3.3.2 Array of Reference Type3.3.3 Two-dimensional and Multi-dimensional Arrays3.3.4 Classes3.3.5 Interfaces3.3.6 Enum3.3.7 Annotation3.4 Super-types and sub-typesLessons LearnedExercises
4. Operators and Statements
4.1 Operators4.1.1 Arithmetic Operators4.1.2 String Concatenation4.1.3 Relational Operators4.1.4 Logical Operators4.1.5 Bitwise Operators4.1.6 Increment–Decrement Operators4.1.7 Conditional Operator4.1.8 Assignment Cast and instanceof Operators4.1.9 Other Operators4.2 Statements4.2.1 Condition Statements—if, if-else and switch-case4.2.2 Loop Statements—for, while and do-while4.2.3 break, continue and returnLessons LearnedExercises

5. Defining a Class in Java
5.1 Various Members Within a Class5.1.1 Instance Variables5.1.2 Methods5.1.3 Constructors5.1.4 The finalize Method5.1.5 static Variables and static Methods5.1.6 Initializer Block5.1.7 Class Initializer Block5.2 Looking at the Entire ClassLessons LearnedExercises
6. Inheritance and Sub-classing
6.1 Defining Sub-classes6.2 Using super to Use the Constructor of a Super-class6.3 Method Overriding and the Use of super6.4 Variable Shadowing and the Use of super6.5 Method and Variable Binding6.6 Using final with Variables, Methods and ClassesLessons LearnedExercises
7. Abstract Classes and Interfaces
7.1 Abstract Classes and Abstract Methods7.2 Single Inheritance of Classes7.3 InterfacesLessons LearnedExercises
8. The Object Class
8.1 The Object Class as the Super-class of all Classes8.1.1 Methods Inherited from the Object Class8.2 Some Methods of the Class ClassLessons LearnedExercises
9. Creating Packages and Using Access Specifiers
9.1 Uses of Package and Import Statements9.2 Use of Static Imports9.3 Use of Classpath for Class Loading9.4 Access specifiers9.4.1 Access Specifiers for Members of a Package9.4.2 Access Specifiers for Members of a Class9.4.3 Access Specifiers for Overriding Methods9.5 Revisiting javadoc9.5.1 Generating javadoc According to the Target User9.5.2 Using the Java APIs9.5.3 Commonly Used Packages from the Java APIsLessons LearnedExercises
10. Commonly Used Classes from the java.lang Package
10.1 Comparable and Comparator Interfaces10.1.1 Comparable10.1.2 Comparator10.2 String Class10.2.1 String Constants10.2.2 Interfaces Implemented by String10.2.3 Commonly Used Constructors of String Class10.2.4 Common Methods from String Class10.2.5 Methods Involving Regular Expresssions10.2.6 Conversion of Primitives to String10.3 StringBuffer and StringBuilder Classes10.4 Supplementary Characters10.5 Pass by Value and Pass by Reference10.6 Wrapper Classes10.6.1 Number Classes and their Methods10.6.2 Boxing and Unboxing Conversions10.7 Math Class10.7.1 Numeric Values Requiring more than 64 BitsLessons LearnedExercises
11. Exceptions
11.1 Runtime Stack and Execution of Application11.2 The return and the throw Statements11.3 The Return Type and throws Declaration in Methods11.3.1 Checked and the Unchecked Exception Classes11.4 The Throwable Class11.4.1 Exception Chaining11.5 Handling Exceptions with try and catch11.6 Use of the finally Block11.7 Creating Custom Exception Classes11.8 Assertions11.8.1 Agile Methodology and AssertionsLessons LearnedExercises
12. Nested and enum Types
12.1 Member Types12.1.1 Top-level Nested Classes12.1.2 Inner Classes12.2 The Local Class12.3 The Anonymous Class12.4 The enum TypeLessons LearnedExercises
13. java.util Package and the Collection Framework
13.1 Date, TimeZone, Calendar and the GregorianCalendar Classes13.2 Arrays Class13.3 Collection Framework13.3.1 Collection Interface13.3.2 Set and List Interfaces13.3.3 Map Interface13.3.4 Generics in the Collection Framework13.4 Collections Class13.5 StringTokenizer Class13.6 Regular Expressions, Pattern and Matcher Classes13.6.1 Pattern and Matcher Classes13.7 Scanner Class13.8 Varargs and the Formatter Class13.8.1 Formatter ClassLessons LearnedExercises
14. Input/Output Related Classes
14.1 File Management14.2 Stream Classes14.2.1 OutputStream and the Writer Classes14.2.2 InputStream and the Reader Classes14.2.3 Bridge Classes OutputStreamWriter and the InputStreamReader14.2.4 Writing and Reading from Files Using FileOutputStream and the FileInputStream14.2.5 Piped Streams14.2.6 Array-based Streams14.2.7 Filter Streams14.2.8 Buffered Streams14.2.9 Pushback Streams14.2.10 PrintStream and the PrintWriter Classes14.2.11 SequenceInputStream14.2.12 Data and Object Streams14.3 RandomAccessFileLessons LearnedExercises
15. Networking
15.1 Networking Concepts15.1.1 Various Layers/Protocol in Communication15.2 Java API for Networking15.2.1 InetAddress Class15.2.2 Using Socket and ServerSocket for Client–Server Communication15.2.3 URL15.2.4 URLConnection15.2.5 DatagramSocket and DatagramPacket for UDP-based CommunicationLessons LearnedExercises
16. Multi-threading
16.1 Thread Class and Thread of Execution16.2 Creating a New Thread of Execution16.3 ThreadGroup16.4 Properties of Thread Instance16.4.1 Daemon Threads16.4.2 Thread States16.5 Synchronization16.6 Another Way of Creating a Thread of ExecutionLessons LearnedExercises
17. GUI—Getting Started
17.1 AWT and Swing17.2 AWT Components17.2.1 Overview of the AWT Components17.2.2 Component Properties17.2.3 Graphics Context17.2.4 Toolkit ClassLessons LearnedExercises
18. GUI—Containers
18.1 Container Class18.1.1 Layout Managers18.2 Top-level Containers18.2.1 Window Class18.2.2 Decorated Windows Frame and Dialog18.3 Other Containers18.3.1 Panel Class18.3.2 ScrollPane Class18.4 Creating a GUILessons LearnedExercises
19. GUI—Events
19.1 Event Delegation Model19.2 AWTEvents19.2.1 ActionEvent19.2.2 AdjustmentEvent19.2.3 ItemEvent19.2.4 TextEvent19.2.5 ComponentEvent19.2.6 ContainerEvent19.2.7 FocusEvent19.2.8 InputEvent19.2.9 PaintEvent19.2.10 WindowEvent19.2.11 KeyEvent19.2.12 MouseEvent19.2.13 Adapter ClassesLessons LearnedExercises
20. GUI—Swing and MVC
20.1 Top-level Containers20.1.1 JLayeredPane Class20.2 JComponent20.3 JOptionPane20.3.1 Showing Message Dialogs20.3.2 Showing Confirm Dialogs20.3.3 Showing Input Dialogs20.4 Model-View-Controller20.4.1 JTable20.4.2 JTreeLessons LearnedExercises
21. Building Applets
21.1 Browser as a Container for the Applet21.2 Life-cycle of an Applet21.3 AppletStub21.4 Applet Tag21.5 AppletContext21.6 Applet Class21.6.1 AudioClip21.7 Security IssueLessons LearnedExercises
22. Using JDBC APIs, for Interaction with Databases
22.1 ODBC and JDBC22.2 JDBC Drivers22.2.1 Types of JDBC Drivers22.3 Using JDBC Drivers and the API22.3.1 Overview of API Related to Connection and Interaction with Database22.3.2 Connecting to a Database22.3.3 Interacting with the Database22.3.4 Examining the Results of a Query from the ResultSet22.4 Managing Transactions22.5 SQLExceptionLessons LearnedExercises
23. Annotations
23.1 Defining a New Annotation23.2 Annotating a Programming Element23.3 Annotation Element Names and Usage23.4 Meta-annotations23.4.1 Restricting Applicability of an Annotation23.4.2 Retention PolicyLessons LearnedExercises
Appendix A What is UTF?
Appendix B Indic Characters in Unicode
Appendix C Javadoc Tags
Acknowledgements
Copyright

Content preview from The class of Java

CHAPTER 8 The `Object` Class

In Chapter 7, we have seen that there is single inheritance of classes in Java, i.e. a class cannot have more than one direct super-class. Every class in Java has a direct super-class, if we do not declare a super-class while defining a class then the compiler assumes the Object class to be the super-class. Only the Object class does not have any super-class. In Java any instance which is created has certain minimum behaviour. When an instance of any reference type is created, it has certain methods always available. These are the methods which are inherited from the Object class. These methods are also available on instances of arrays. Object class is the root of the class hierarchy, defining the minimum set of methods ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.

Julian F.

Head of Cybersecurity

I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.

Addison B.

Field Engineer

I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.

Amir M.

Data Platform Tech Lead

I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.

Mark W.

Embedded Software Engineer

Publisher Resources

ISBN: 9788131755400

Cloud Computing

Data Engineering

Data Science

AI & ML

Programming Languages

Software Architecture

IT/Ops

Security

Design

Business

Soft Skills

The class of Java

by Pravin Jain

CHAPTER 8

The `Object` Class

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.