Textbook in PDF format

This book is written for learners with little to no experience with computers and Java programming. It is organized to start with the fundamentals and then gradually move towards advanced topics. The 100+ examples and practice questions in this book should help learners get good hands-on practice with every topic covered in this book. Clear, step-by-step explanations of each topic will guide readers to get comfortable with Java programming and start writing programs using advanced concepts. This book will help readers get comfortable with computer programming, starting from the fundamentals of computers to the object-oriented programming in Java. I included computer fundamentals to give a good foundation to any new learners because we should build a strong foundation about the subject before diving deeper. A code snippet and an explanation of the same follow each Java topic covered in this book. Please review the code and the explanation and do a lot of hands-on practice to understand each concept better. The best way to learn coding is to practice as much as possible. The examples and practice problems in this book should help you learn each concept clearly; however, I recommend you try to think of some problems on your own and write code to solve them. While trying to solve the problem, make sure you first start by thinking about the logic to solve that problem. You start coding only when you have the logic designed. This is because coding is just the translation of logic into a programming language. This book is divided into three sections. The first section, Computer Fundamentals, introduces topics such as components of computers, operating systems, use of Binary number system, etc. I recommend new learners go through this section without skipping any topics. This section also covers logic-building topics, which will be very handy when writing programs for the first time. In the second section, Java Programming Basics, you will learn Java programming basics such as data types, variables, constants, conditional control statements, loops, exception handling, and modular programming. The Modular Programming chapter covers Functions (methods), method parameters, and creating small modules that perform specific tasks rather than writing one big program that does everything. By the end of this section, you should be able to write Java programs using the concepts you learned and be able to better structure your code using a modular approach. The last section, Object Oriented Programming, covers the Object-oriented programming concepts and topics such as classes, objects, access specifiers, constructors, static vs. non-static members, abstract classes, and interfaces. Each topic includes examples and explanations. What you will learn Get to know the basics of computer components and character encoding systems. Learn about the operating systems and what they do. Understand the importance of logic building when starting to write new programs. Follow the step-by-step instructions and install all required software to start Java coding. Master Java topics such as Arrays, Control flow statements, String manipulations, Exception handling, etc. Develop a deep understanding of object-oriented concepts, such as inheritance, polymorphism, abstraction, and encapsulation. Be able to write programs using Classes, Objects, Constructors, Static & non-Static members. Implement the OOPS concepts in your programs using approaches such as method overloading, method overriding, abstraction, etc. Get good hands-on practice with various Java concepts using the examples given in the book. Preface Computer Fundamentals Get to know your computer Binary Number System and Encoding Standards (ASCII, Unicode) Operating Systems Programming Basics Java Programming Basics First step towards Java Install the required software Develop your first Java Program Java Variables and Operators Learning Control Flow Statements Working with Arrays in Java String Handling and Manipulations Declaring Constants in Java Exception Handling Modular Programming Object Oriented Programming Object Oriented Programming Object Oriented Programming System (OOPS) Concepts Java Classes and Objects Static Vs. Non-Static Members of Class Constructors Java Access specifiers Java Packages and Import Concept Inheritance using Java Polymorphism using Java Abstract Class & Interface Polymorphism using Abstraction