--- product_id: 8653593 title: "Sams Teach Yourself Java in 21 Days: Covering Java 7 and Android" brand: "rogers cadenhead" price: "S/.362" currency: PEN in_stock: true reviews_count: 10 url: https://www.desertcart.pe/products/8653593-sams-teach-yourself-java-in-21-days-covering-java-7 store_origin: PE region: Peru --- # Sams Teach Yourself Java in 21 Days: Covering Java 7 and Android **Brand:** rogers cadenhead **Price:** S/.362 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Sams Teach Yourself Java in 21 Days: Covering Java 7 and Android by rogers cadenhead - **How much does it cost?** S/.362 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/8653593-sams-teach-yourself-java-in-21-days-covering-java-7) ## Best For - rogers cadenhead enthusiasts ## Why This Product - Trusted rogers cadenhead brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Sams Teach Yourself Java in 21 Days: Covering Java 7 and Android ## Images ![Sams Teach Yourself Java in 21 Days: Covering Java 7 and Android - Image 1](https://m.media-amazon.com/images/I/41S9WJRtCHL.jpg) ![Sams Teach Yourself Java in 21 Days: Covering Java 7 and Android - Image 2](https://m.media-amazon.com/images/I/51V946QrnrL.jpg) ![Sams Teach Yourself Java in 21 Days: Covering Java 7 and Android - Image 3](https://m.media-amazon.com/images/I/31Gk6p65O6L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Overall, a Great Java Book *by W***M on Reviewed in the United States 🇺🇸 on October 15, 2014* First off, on a scale of 1-5 stars, I give Sams Teach Yourself Java in 21 Days (I'll call it "Java in 21 Days" from now on) a rating of 4 stars. This book has been a pleasure to read and has been a great resource for learning the Java programming language. However, code errors and some lack-luster content prevent it from having a 5-star rating (in my opinion).Before I began reading this book, I scoured through at least a dozen other Java books, all of which I put down midway through them. They all had one major problem: incomplete code samples. I got tired of reading the phrase, "Visit the book's website for the full source code of this example." What made it even worse is when those websites were no longer available. It was very frustrating. I firmly believe that if you're going to teach programming in a book, you'd better provide full code examples in the book. If page count is the problem, I can see the author's dilemma, but for digital books, there's no excuse. Java in 21 Days provides full working code samples in the book with the option to download the code on the book's website. The only reason I had to go to the book's website was for some icons, which really could be downloaded anywhere, and also for a data file in the Networking chapter, and a database file in the XML-RPC chapter. The fact that the book's website is truly a companion, rather than a requirement, and that all code samples are complete, makes Java in 21 Days worth my time to read.The author, Rogers Cadenhead, does a remarkable job of presenting the subject matter in an easy-to-read manner. Now, this book was not written for the absolute beginner, but rather for folks who have at least some basic understanding of programming, regardless of the language. Previously, I have had experience in Python and JavaScript, so this book was right up my alley. An absolute beginner might want to start with Introduction to Programming Using Java by David J. Eck (a free download at http://math.hws.edu/javanotes/). After completing the first 3 - 5 chapters of that book (after chapter 5 code examples become incomplete), a person should be perfectly suited to dive into Java in 21 Days. On the flip side, if you have a lot of experience with Java, then this book might only be reference material for you.My real main problem with this book is that the last several chapters of the book had a few errors scattered throughout the code samples. At first, they were minor and I was able to spot them and easily correct them. But further along in the book, the errors were more problematic. For instance, in the database chapter, one code sample had a misplaced parenthesis and a missing semicolon. Then, in the RSS chapter, one code sample had an entire statement missing. I had to go back to a previous code sample to figure out the missing statement. There were other errors where the author intended to do one thing, but changed it later and forgot to update the surrounding text to correspond with the change. That wasn't so much of a problem, but it was a distraction.One other issue I had with the book is some lack-luster content. Maybe it is just me, but I felt that the chapters for Day 13 (Creating Java2D Graphics), Day 16 (Serializing and Examining Objects), Day 17 (Communicating Across the Internet), and Day 20 (XML Web Services) were a bit lacking. On those days, I just could not get into the subject matter and nothing seemed to make more than a bit of sense. I got the idea of what the author was trying to teach, but there were no real inspiring moments on those days. Again, perhaps it was just me and maybe a second time through the material will yield different results.Overall, I really enjoyed this book, despite what I thought were short-comings. so far, it has been the best beginner-level Java book I have read so far. I really did learn a lot about Java and programming in general while reading Java in 21 Days. I highly recommend this book to anyone wanting to explore the world of the Java programming language. ### ⭐⭐⭐⭐ Pretty darn good book - but it's not an easy 21 days! *by A***N on Reviewed in the United States 🇺🇸 on May 24, 2013* Coming into this purchase, I had never worked with Java before and my sole programming knowledge consisted of two semesters of college C++ many years ago. While this gave me some (very limited) knowledge of Object Oriented Programming, I really wanted to learn Java so I picked up the Kindle version of this book.Mr Cadenhead pretty reliably covers the fundamentals of Java and even gets quite in depth with the language. I think it is safe to say that he goes well beyond what an Intro course would teach for Java. Because of this, if you *really* want to learn Java in 21 days exactly, you can - just be prepared to read, re-read, practice, and practice some more. The pace of this book can be a little overwhelming at times, and I found it useful to hop to the internet for some queries about syntax and definitions that were sort of glossed over (in my opinion). Still, I have learned a lot. It is a great resource and very meaty with information. The exercises are extremely helpful and Mr. Cadenhead provides support on his webpage. ### ⭐⭐⭐⭐⭐ Good me going in no time *by J***N on Reviewed in the United States 🇺🇸 on July 1, 2013* I have had some prior experience with programming in python. I wanted to get a feel for android so I jumped into Burds "Android application development All-in-one for dummies". I managed to hack my way to a pretty rudimentary application but I can't say I understood most of the java code I was piecing together. Eventually I picked up Cadenheads Sams teach yourself java in 21 days. I went through the first 8 days and they where a wonderful introduction to Java. Now I understand the basics of the java structure and syntax and I can proceed with android programming and actually understand what the heck I am doing.I am sure the remaining day 9-21 are just as good, I haven't gone through them because I have no need for it right now.In short I would recommend this to anyone wanting to get a basic grasp of java in the fastest way possible. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/8653593-sams-teach-yourself-java-in-21-days-covering-java-7](https://www.desertcart.pe/products/8653593-sams-teach-yourself-java-in-21-days-covering-java-7) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-05-01*