How This Book Is Organized
This book consists of 13 objective‐based chapters followed by 3 full‐length mock practice exams. There are some subtle differences between the objective‐based chapters and practice exam chapters that you should be aware of while reading this book.
Using the Objective‐Based Chapters
An objective‐based chapter is composed of questions that correspond to an objective set, as defined by Oracle on the 1Z0‐819 Exam. We designed the structure and style of each question in the objective‐based chapters to reflect a more positive learning experience, allowing you to spend less time on each question but covering a broader level of material. For example, you may see two questions that look similar within a chapter but contain a subtle difference that has drastic implications on whether the code compiles or what output it produces.
Just like the review questions in our study guide, these questions are designed so that you can answer them many times. While these questions may be easier than exam questions, they will reinforce concepts if you keep taking them on a topic you don't feel strongly on.
In our study guides, we often group related topics into chapters or split them for understanding. For example, in our study guides we presented parallel streams as part of the concurrency chapter since these concepts are often intertwined, whereas the 1Z0‐819 Exam splits concurrency and parallel streams across two separate objectives. In this book, though, the chapters are organized around Oracle's objectives so you can test your skills. While you don't need to read an entire study guide before using an objective‐based chapter in this book, you do need to study the relevant objectives.
Table I.3 shows what chapters you need to have read in our Java 11 study guides at a minimum before practicing with the questions in this book. Remember that the Java 11 Programmer I and II Study Guides contain the same material as the combined Java 11 Complete Study Guide.
TABLE I.3 Oracle Objectives and Related Study Guide Chapters
| Chapter in This Book | Objectives | Complete Study Guide Chapter | OCP Programmer I Chapter | OCP Programmer II Chapter |
|---|---|---|---|---|
| 1 | Working with Java Data Types | 3, 4, 5, 6, and 12 | 3, 4, 5, and 6 | 1 |
| 2 | Controlling Program Flow | 4 | 4 | |
| 3 | Java Object‐Oriented Approach | 2, 7, 8, 9, and 12 | 2, 7, 8, and 9 | 1 |
| 4 | Exception Handling | 10 and 16 | 10 | 5 |
| 5 | Working with Arrays and Collections | 5 and 14 | 5 | 3 |
| 6 | Working with Streams and Lambda Expressions | 6, 15, and 18 | 6 | 4 and 7 |
| 7 | Java Platform Module System | 11 and 17 | 11 | 6 |
| 8 | Concurrency | 18 | 7 | |
| 9 | Java I/O API | 19 and 20 | 8 and 9 | |
| 10 | Secure Coding in Java SE Application | 22 | 11 | |
| 11 | Database Applications with JDBC | 21 | 10 | |
| 12 | Localization | 16 | 5 | |
| 13 | Annotations | 13 | 2 |
Some of our chapters have a lot of questions. For example, Chapter 3 contains more than 200 questions. This is based on how Oracle chose to organize its objectives. We recommend doing these larger chapters in batches of 30–50 questions at a time. That way you can reinforce your learning before doing more questions. This also lets you practice with sets of questions that are closer to the length of the exam.
Taking the Practice Exams
Chapters 14, 15, and 16 of this book contain three full‐length practice exams. The questions in these chapters are quite different from the objective‐based chapters in a number of important ways. These practice exam questions tend to be harder because they are designed to test your cumulative knowledge rather than reinforcing your existing skill set. In other words, you may get a question that tests two discrete topics at the same time.
Like the objective chapters, we do indicate exactly how many answers are correct in the practice exam chapters, as is done on the real exam. All three practice exam chapters are designed to be taken within 90 minutes and have a passing score of 68 percent. That means you need to answer at least 34 questions correctly. Remember not to take the practice exam until you feel ready. There are only so many practice exams available, so you don't want to waste a fresh attempt.
While an objective‐based chapter can be completed over the course of a few days, the practice exam chapters were each designed to be completed in one sitting. You should try simulating the exam experience as much as possible. This means setting aside 90 minutes, grabbing a whiteboard or scrap paper, and answering every question even if you aren't sure of the answer. Remember, there is no penalty for guessing, and the more incorrect answers you can eliminate the better.
Reviewing Exam Changes
Oracle
