Sams Teach Yourself Java in 21 Days

by Rogers Cadenhead

In just 21 days, you can acquire the knowledge and skills necessary to develop applications on your computer, web servers, and mobile devices. With this complete tutorial you’ll quickly master the basics and then move on to more advanced features and concepts. Completely updated for Java 11 and 12, this book teaches you about the Java language and how to use it to create applications for any computing environment. By the time you have finished the book, you’ll have well-rounded knowledge of Java and the Java class libraries.



No previous programming experience required. By following the 21 carefully organized lessons in this book, anyone can learn the basics of Java programming.



Learn at your own pace. You can work through each chapter sequentially to make sure you thoroughly understand all the concepts and methodologies, or you can focus on specific lessons to learn the techniques that interest you most.



Test your knowledge. Each chapter ends with a Workshop section filled with questions, answers, and exercises for further study. There are even certification practice questions.



Completely revised, updated, and expanded to cover the latest features of Java 11 and 12 Learn to develop Java applications using NetBeans–an excellent programming platform Easy-to-understand, practical examples clearly illustrate the fundamentals of Java programming Discover how to quickly develop programs with a graphical user interface Find out about JDBC programming with the Derby database Learn how to use Inner Classes and Lambda Expressions Learn rapid application development with Apache NetBeans Create a game using Java

Genres: Nonfiction

672 pages, Kindle Edition

First published January 29, 2012

About the author

Rogers Cadenhead is a ServiceNow developer who has created applications in insurance and customer service. He is also the author of more than a dozen books on computer programming and web publishing, including the Sams Teach Yourself Java in 21 Days series, and the chairman of the RSS Advisory Board, the group that publishes the RSS 2.0 specification.

Reviews

[Hilary · Rating 4 out of 5]

This book appears to throw you in at the deep end. If a new programmer just looked at Day 1 it could be quite intimidating, as it goes into classes, inheritance and has you type a lot of code you won't understand, but Day 2 moves into explanations of variables, data types, operators and so on, which will make that beginning programmer sigh with relief.

I think it would be helpful if you already understand the basic concepts of programming and want some practical experience with Java; I wouldn't recommend this for anyone who doesn't already have some experience (even if tiny) because the nuances of things like class/local/instance variables might be very confusing to someone who has only just learned what a variable is. In short, it's better for a novice than a complete beginner.

This book does guide you towards best practices, and helps with the more abstract areas, and seems good at bolstering existing knowledge.

[Nile · Rating 5 out of 5]

Unfortunately, I'm going to read this cover to cover again because I haven't retained much aside from basic OOP principles and method chaining concepts. While I initially thought memorizing syntax was the key, I've realized I need to focus more on understanding core programming patterns and problem-solving approaches. I want to solidify my grasp of Java's type system, generics, and memory management before moving on, since my goal is eventually learning C++ for performance-critical applications and game development. Java and C++ share many fundamental concepts, so building a strong foundation in object-oriented design patterns and understanding how different languages handle memory will serve me well. One thing I will say about this book is that it's full of practical examples and hands-on projects, though I should note that since this covers Java 7 and older Android development approaches, I'll need to supplement it with more current resources covering modern Java features and Kotlin for Android development.

[Kirt · Rating 4 out of 5]

Good Java tutorial and introduction to programming Android apps.