Packt+ | Advance your knowledge in tech

0

All Products

Best Sellers

New Releases

Books

Videos

Audiobooks

Free Learning

Introduction to Programming

You're reading from Introduction to Programming Learn to program in Java with data structures, algorithms, and logic

Product type Paperback

Published in Jun 2018

Publisher Packt

ISBN-13 9781788839129

Length 722 pages

Edition 1st Edition

Languages

Java

Concepts

Programming Language

Author (1):

Nick Samoylov

View More author details

Table of Contents (27) Chapters

Title Page

Copyright and Credits

Dedication

Contributors

Packt Upsell

Preface

1. Java Virtual Machine (JVM) on Your Computer FREE CHAPTER

2. Java Language Basics

3. Your Development Environment Setup

4. Your First Java Project

5. Java Language Elements and Types

6. Interfaces, Classes, and Object Construction

7. Packages and Accessibility (Visibility)

8. Object-Oriented Design (OOD) Principles

9. Operators, Expressions, and Statements

10. Control Flow Statements

11. JVM Processes and Garbage Collection

12. Java Standard and External Libraries

13. Java Collections

14. Managing Collections and Arrays

15. Managing Objects, Strings, Time, and Random Numbers

16. Database Programming

17. Lambda Expressions and Functional Programming

18. Streams and Pipelines

19. Reactive Systems

1. Other Books You May Enjoy

Leave a review - let other readers know what you think

Index

Exercise – Comparing String.indexOf() and StringUtils.indexOf()

What is the difference between the indexOf() method of the String class and the indexOf() method of the StringUtils class?

Answer

The indexOf() method of the String class does not handle null. Here is some demo code:

String s = null;
int i = StringUtils.indexOf(s, "abc");     //return -1
s.indexOf("abc");                          //throws NullPointerException

The rest of the chapter is locked

Register for a free Packt account to unlock a world of extra content!

A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.

Unlock this book and the full library FREE for 7 days

Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of

Start free trial

Renews at $15.99/month. Cancel anytime

Authors (1)

Nick Samoylov

Nick Samoylov

Nick Samoylov graduated from Moscow Institute of Physics and Technology, working as a theoretical physicist and learning to program as a tool for testing his mathematical models. After the demise of the USSR, Nick created and successfully ran a software company, but was forced to close it under the pressure of governmental and criminal rackets. In 1999, with his wife Luda and two daughters, he emigrated to the USA and has been living in Colorado since then, working as a Java programmer. In his free time, Nick likes to write and hike in the Rocky Mountains.

See other products by Nick Samoylov

Other recommended products

Related to this chapter

Learn Java 12 Programming

Learn Java 12 Programming

Java and its new features add to the richness of the language. It is the preferred language for many of today's leading-edge technologies, everything from smartphones and game consoles to robots, massive enterprise systems, and supercomputers. Java 12 programming is your one-stop guide to learning the language and all its latest features.

Apr 2019 23h 0m

Java 11 Cookbook

Java 11 Cookbook

Java is one of the most widely accepted languages because of its design and programming features. This book offers a range of software development examples in simple and straightforward Java 11 code, providing step-by-step resources and time-saving methods to help you solve data problems efficiently.

Sep 2018 26h 44m

Java 9 Cookbook

Java 9 Cookbook

Java is one of the most widely accepted languages because of its design and programming features, particularly in its promise that you can write a program once and run it anywhere. This cookbook offers a range of software development examples in simple and straightforward Java 9 code, providing step-by-step resources and time-saving methods to help you solve data problems efficiently. We cover major concepts such as Project Jigsaw and various tools that will enable you to modularize your applications.

Aug 2017 20h 48m

Java: High-Performance Apps with Java 9

Java: High-Performance Apps with Java 9

Java 9 is one of the most popular application development languages. The latest released version Java 9 comes with a host of new features and new APIs with lots of ready to use components to build efficient and scalable applications. Streams, parallel and asynchronous processing, multithreading, JSON support, reactive programming, and microservices comprise the hallmark of modern programming.

Mar 2018 6h 28m

Java 11 and 12 - New Features

Java 11 and 12 - New Features

This book is a concise source to keep you updated about the released and upcoming changes in the core Java language. It covers version 10, 11, and various projects at Oracle, which every Java enthusiast will know about. You will learn to write better code and make informed decisions to choose new features for creating performant applications.

Java Coding Problems

Java Coding Problems

The Modern Java Challenge is the book which contains a set of challenges designed specifically to help you master a specific skill in a specific domain. This will put your knowledge to test through real-world problems and help you in becoming an expert Java Programmer.

Sep 2019 27h 12m

Java Fundamentals

Java Fundamentals

As a practical hands-on guide, Java Fundamentals progressively imparts you with the skills you need to efficiently write programs in Java. After a quick introduction to the principles of Java, you'll move on to learn all about data types, data structures, and control. You'll also understand object-oriented programming in depth, with emphasis on typecasting, abstract classes, and interfaces. You'll learn how to make your code strong by creating your own generics and handling exceptions. With the right flow of content coupled with exercises and activities, Java Fundamentals builds a solid foundation for you that you can use later to delve into the huge forest of Java API.

Mar 2019 13h 36m

Introduction to JVM Languages

Introduction to JVM Languages

Anyone who knows software development knows about the Java Virtual Machine. The Java Virtual Machine is responsible for interpreting Java byte code and translating it into actions. In the beginning, Java was the only programming language used for the JVM. But increasing complexity of the language and the remarkable performance of the JVM created an opening for a new generation of programming languages. If you want to build a strong foundation with the Java Virtual Machine and get started with popular modern programming languages, then this book is for you.

Jun 2017 15h 0m

Java 9 High Performance

Java 9 High Performance

Java is one of the most popular application development languages but ever since its first version, it has been deemed as a memory hog. Java 9 comes with a host of new features and new APIs with lots of ready to use components to build efficient and scalable applications.

Nov 2017 13h 16m

Learn C# Programming

Learn C# Programming

Learning C# 8 covers in detail the most important building blocks of C# that will help you learn every aspect of C# programming with an easy learning curve. With extensive coverage of the topics explained with the real-world examples, you will gain an in-depth knowledge of practical details involved in software development using C#.

Apr 2020 21h 12m

Java 9 Programming By Example

Java 9 Programming By Example

Java is one of the most used software languages by programmers and developers. It powers massive applications from Google to Amazon all over the world.

Apr 2017 16h 48m

The Java Workshop

The Java Workshop

Hone your skills with this book and become a Java expert. After a fast-paced introduction to all concepts that make Java a sought after language, this book immediately takes you deep into the world of optionals, references, Java threads, and Future API. With challenging examples providing the action, you are bound to enjoy the book and add much to your skill set!

Aug 2019 31h 44m

Personalised recommendations for you

Based on your interests and search pattern

LLVM Code Generation

LLVM Code Generation

LLVM is a key technology for building modern compilers. You'll learn how to use its infrastructure to create and extend backends (X86 and AArch64), and contribute to the LLVM open-source project, equipping you with key skills in compiler design.

May 2025 20h 40m

Domain-Driven Refactoring

Domain-Driven Refactoring

This book is your exhaustive guide to applying DDD practices for building robust applications. You'll learn key patterns, refine business logic, and solve real-world problems with DDD principles, refactoring, and event-driven architectures.

May 2025 10h 48m

The Power Platform Playbook for Digital Transformation

The Power Platform Playbook for Digital Transformation

Transform your business with Power Apps, Power Automate, Power BI, and Copilot Studio. This guide covers automation, AI insights, governance, and security, helping leaders, IT pros, and analysts build scalable, low-code enterprise solutions.

Apr 2025 11h 44m

Microservices with Go

Microservices with Go

The book covers Go microservice development, covering the basics for beginners and best practices for structuring Go apps. Novice as well seasoned developers will gain insights into managing and scaling microservices.

Jun 2025 14h 16m