A Primer on Java
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A Primer on Java

Second Edition

About the Book

A gentle introduction to the basics of Java. No prior programming experience is necessary to read this text. My purpose was to write an easy but non-verbose introduction to the language.

The book however is not intended as a reference work or for a full time Java programmer since it does not have an exaustive topic coverage.

About the Author

Rahul Batra
Rahul Batra

Rahul Batra was first introduced to programming in 1996 in GWBASIC, but he did not seriously foray into it till 2001 when he started learning C++. Along the way, there were dabblings in many other languages like C, Ruby, Perl and Java. He has worked on Oracle, MySQL, Sybase ASA, Ingres and SQLite.

Rahul has been programming professionally since 2006 and currently lives and works in Gurgaon, India.

Table of Contents

  • Preface
  • About the author
  • Acknowledgements
  • 1 An introduction to Java
    • 1.1 What is Java?
    • 1.2 Advantages of Java
    • 1.3 Getting Java
    • 1.4 Writing your first Java program
    • 1.5 Analyzing your first program
  • 2 Data Types and Variables
    • 2.1 Literals
    • 2.2 Variables
    • 2.3 Data Types
  • 3 Introducing Classes & Objects
    • 3.1 Abstraction
    • 3.2 Defining classes and objects
    • 3.3 Creating a class in Java
    • 3.4 Objects and references
  • 4 Conditional Statements
    • 4.1 Comparison Operators
    • 4.2 If-Else Conditional
    • 4.3 Switch Conditionals
  • 5 Iteration Statements
    • 5.1 The while loop
    • 5.2 The do-while loop
    • 5.3 The for loop
    • 5.4 break and continue
  • 6 Arrays
    • 6.1 Array Initialization
    • 6.2 Using Arrays
    • 6.3 The enhanced for loop
  • 7 Methods
    • 7.1 Parameters & Return Values
    • 7.2 Constructors
  • 8 Strings
    • 8.1 String Methods
    • 8.2 Escape Characters
    • 8.3 Comparing Strings
  • 9 Inheritance
    • 9.1 Extending a class
    • 9.2 Access Specifiers
    • 9.3 The super Keyword
    • 9.4 The Object class
  • 10 Abstract Classes and Interfaces
    • 10.1 Abstract Classes
    • 10.2 Interfaces
    • 10.3 Multiple Inheritance and Interfaces
  • 11 Exception Handling
    • 11.1 The try-catch block
    • 11.2 Java Exception Classes
    • 11.3 Throwing an exception
    • 11.4 The finally statement
  • 12 Packages in Java
    • 12.1 What is a package?
    • 12.2 Packaging a class
    • 12.3 The CLASSPATH variable
    • 12.4 Importing packages
  • Further Reading
  • Appendix: Code Editors and Integrated Development Environments
  • Glossary

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