Unlock your Java potential and master the OCP Java SE 21 Developer exam with confidenceDive into the OCP Oracle Certified Professional Java SE 21 Developer Study Guide: Exam 1Z0-830 for a comprehensive journey through the Java SE 21 Developer certification exam. Crafted by a team of seasoned Java professionals, this guide not only prepares you for the 1Z0-830 exam but also equips you with essential skills for both new and existing Java development roles. Enhance your knowledge, refine your skills, and discover new techniques with this expertly written roadmap.Explore the depths of Java development, from writing methods that utilize pattern matching to building applications with virtual threads. This guide covers all you need to ace the certification and excel in your Java development career. Additionally, it provides exclusive access to Sybex's online learning environment and test bank, featuring a wealth of practice questions, electronic flashcards, and a glossary to ensure you're fully prepared for exam day.You'll also: Gain a solid understanding of Java SE 21 features and how to apply them effectively in your development projects Boost your preparation with hundreds of practice questions and valuable online resources from the Sybex online learning environment Quickly reference key concepts thanks to a searchable glossary, making it an indispensable tool for both junior and senior Java developers Whether you're gearing up for the OCP Java SE 21 Developer exam or seeking to solidify your Java expertise, this study guide is an essential resource. It not only serves as a comprehensive preparatory material for the certification but also as a go-to reference for your daily programming needs. Embrace this opportunity to reduce test anxiety, enhance your Java skills, and step confidently into your role as a Java developer. Make this book your coding companion today and set the stage for a thriving career in Java development.

Autorentext

ABOUT THE AUTHORS Jeanne Boyarsky is a Java Champion and has worked as a Java developer for a major bank for more than 22 years. She is a senior moderator at CodeRanch, and trains and mentors students of all levels. Scott Selikoff has been a professional Java Enterprise architect for almost 25 years. He currently works as a Staff Software Engineer at Google, specializing in Architecture and Cloud Services. He is a Leader of the Garden State Java User Group, helping to facilitate discussions and exchange of ideas within the community.

Klappentext

Succeed on the Java® SE 21 Developer certification exam on your first attempt In OCP Oracle® Certified Professional Java® SE 21 Developer Study Guide: Exam 1Z0-830, a team of expert Java developers and trainers delivers a focused and authoritative roadmap to the newly updated Java® SE 21 Developer certification exam (1Z0-830). The authors explain key concepts from the test that you can also apply to a new or existing Java development role, ensuring you obtain new skills, sharpen old ones, and discover skills you never knew you had. From writing methods that utilize pattern matching to building applications with virtual threads, you'll find everything you need to know about Java development to perform well on the test and at your day job. The book also includes complementary access to Sybex's superior online interactive learning environment and test bank, which offers hundreds of practice exam questions, electronic flashcards, and a searchable Glossary of the most important terms readers need to understand. Perfect for anyone preparing for the challenging OCP Java® SE 21 Developer exam, this book will also earn a prominent place on the desks of a junior and senior programmers who use Java on a daily basis. It's an ideal resource and quick reference to help you quickly find info you need immediately, reduce test anxiety on the certification exam, and assist you in your day-to-day work as a Java developer. You'll also get:

• Handle date, time, text, numeric, and Boolean values
• Understand and control program flow
• Utilize Java's Object-Oriented approach to programming
• Handle exceptions and errors
• Work with streams and Lambda expressions
• Package and deploy Java code

• Use the Java I/O API ABOUT THE ORACLE CERTIFIED PROFESSIONAL DEVELOPER CERTIFICATION The OCP Oracle Certified Professional Java® SE 21 Developer certification validates advanced understanding of Oracle concepts and skills as well as experience applying them in the real world. The focus is on advanced developer skills with a strong foundation in Java technology. Interactive learning environment Take your exam prep to the next level with Sybex's superior interactive online study tools. To access our learning environment, simply visit www.wiley.com/go/sybextestprep, register your book to receive your unique PIN, and instantly gain one year of FREE access after activation to:

• Interactive test bank with 3 practice exams to help you identify areas where further review is needed. Get more than 90% of the answers correct, and you're ready to take the certification exam.
• More than 500 electronic flashcards to reinforce learning and last-minute prep before the exam

• Comprehensive glossary in PDF format gives you instant access to the key terms so you are fully prepared

  Inhalt

  Introduction xxix

  Assessment Test xlix

  Chapter 1 Building Blocks 1

  Chapter 2 Operators 63

  Chapter 3 Making Decisions 101

  Chapter 4 Core APIs 165

  Chapter 5 Methods 233

  Chapter 6 Class Design 291

  Chapter 7 Beyond Classes 359

  Chapter 8 Lambdas and Functional Interfaces 439

  Chapter 9 Collections and Generics 481

  Chapter 10 Streams 553

  Chapter 11 Exceptions and Localization 613

  Chapter 12 Modules 683

  Chapter 13 Concurrency 745

  Chapter 14 I/o 811

  Appendix Answers to Review Questions 887

  Index 937