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OCP Oracle Certified Professional Java SE 17 Developer Exam 1Z0-829 Programmer's Guide is a unique guide that combines a rigorous introduction to programming in Java with meticulous coverage of the Java SE 17 and Java SE 11 Developer exam objectives. Fully updated to reflect changes in the latest exams, it features increased focus on analyzing code scenarios--not just individual language constructs. Each objective is thoroughly addressed, reflecting the latest features and APIs, as well as best practices for taking the exam. The one book anyone studying for Java SE 17 Developer or Java SE 11 Developer certification needs, it features: Easy to find coverage of key topics relevant to each exam objective An introduction to essential concepts in object-oriented programming (OOP) and functional-style programming In-depth coverage of declarations, access control, operators, flow control, OOP techniques, lambda expressions, streams, modules, concurrency, Java I/O, key API classes and much more Program output demonstrating expected results from complete Java programs Unique diagrams to illustrate important concepts, such as Java I/O, modules, and streams Extensive use of UML (Unified Modeling Language) to illustrate program design Dozens of review questions with annotated answers to help prepare for the exam and a complete Mock Exam Java has been around for over 25 years. During this time, the Java ecosystem has evolved to become the platform of choice for developing software systems, and the Java certification has evolved with it. The goal of this book is two fold: to provide a comprehensive guide, not only for learning Java, but also to nail the Java certification exams. This book provides extensive coverage for the following Java certifications • Oracle Certified Professional (OCP), Java SE 17 Developer, and its required exam, Java SE 17 Developer (1Z0-829) (for details, see Appendix B) • Oracle Certified Professional (OCP), Java SE 11 Developer, and its required exam, Java SE 11 Developer (1Z0-819) (for details, see Appendix C) All elements found in our previous books (e.g., examples, figures, tables, review questions, mock exam questions) can be found in this one as well. We continue to use UML (Unified Modeling Language) extensively to illustrate concepts and language constructs, and all numbered examples continue to be complete Java programs ready for experimentation. This book is not a complete reference for Java, as it does not attempt to list every member of every class from the Java SE Platform API documentation. The purpose is not to document the Java SE Platform API. The emphasis is more on the Java programming language features—their syntax and correct usage through code examples—and less on teaching programming techniques. The book assumes little background in programming. We believe the exam is accessible to any programmer who works through the book. Preface 1 Basics of Java Programming 2 Basic Elements, Primitive Data Types, and Operators 3 Declarations 4 Control Flow 5 Object-Oriented Programming 6 Access Control 7 Exception Handling 8 Selected API Classes 9 Nested Type Declarations 10 Object Lifetime 11 Generics 12 Collections, Part I: ArrayList 13 Functional-Style Programming 14 Object Comparison 15 Collections: Part II 16 Streams 17 Date and Time 18 Localization 19 Java Module System 20 Java I/O: Part I 21 Java I/O: Part II 22 Concurrency: Part I 23 Concurrency: Part II 24 Database Connectivity 25 Annotations 26 Secure Coding A Taking the Java SE 17 and Java SE 11 Developer Exams B Exam Topics: Java SE 17 Developer C Exam Topics: Java SE 11 Developer D Annotated Answers to Review Questions E Mock Exam: Java SE 17 Developer F Annotated Answers to Mock Exam G Java Logging API Overview