OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide

Jeanne Boyarsky, OCA/OCP 8, has worked as a Java developer for a bank in NYC for 13 years where she develops, mentors and conducts training. In her free time, she is a senior moderator at CodeRanch and works on the forum code base. Scott Selikoff, OCA/OCP 8, has been a professional Java Enterprise developer for over 15 years. He currently operates Selikoff Solutions, LLC, which provides software consulting services to businesses in the tri-state New York City area.

• Introduction xixAssessment Test xxxviiiChapter 1 Advanced Class Design 1Reviewing OCA Concepts 2Using instanceof 7Understanding Virtual Method Invocation 9Annotating Overridden Methods 11Coding equals, hashCode, and toString 13Working with Enums 20Creating Nested Classes 24Summary 33Exam Essentials 34Review Questions 36Chapter 2 Design Patterns and Principles 47Designing an Interface 48Introducing Functional Programming 52Implementing Polymorphism 61Understanding Design Principles 66Working with Design Patterns 75Summary 93Exam Essentials 93Review Questions 95Chapter 3 Generics and Collections 103Reviewing OCA Collections 104Working with Generics 108Using Lists, Sets, Maps, and Queues 124Comparator vs. Comparable 143Searching and Sorting 150Additions in Java 8 152Summary 159Exam Essentials 161Review Questions 162Chapter 4 Functional Programming 171Using Variables in Lambdas 172Working with Built-In Functional Interfaces 173Returning an Optional 182Using Streams 185Working with Primitives 205Working with Advanced Stream Pipeline Concepts 213Summary 223Exam Essentials 224Review Questions 226Chapter 5 Dates, Strings, and Localization 233Working with Dates and Times 234Reviewing the String class 253Adding Internationalization and Localization 255Summary 273Exam Essentials 274Review Questions 276Chapter 6 Exceptions and Assertions 283Reviewing Exceptions 284Creating Custom Exceptions 289Using Multi-catch 291Using Try-With-Resources 296Rethrowing Exceptions 305Working with Assertions 308Summary 314Exam Essentials 315Review Questions 316Chapter 7 Concurrency 325Introducing Threads 327Creating Threads with the ExecutorService 335Synchronizing Data Access 350Using Concurrent Collections 358Working with Parallel Streams 366Managing Concurrent Processes 377Identifying Threading Problems 387Summary 392Exam Essentials 393Review Questions 394Chapter 8 IO 405Understanding Files and Directories 406Introducing Streams 411Working with Streams 420Interacting with Users 437Summary 442Exam Essentials 443Review Questions 445Chapter 9 NIO.2 453Introducing NIO.2 454Interacting with Paths and Files 460Understanding File Attributes 478Presenting the New Stream Methods 487Comparing Legacy File and NIO.2 Methods 494Summary 495Exam Essentials 495Review Questions 497Chapter 10 JDBC 505Introducing Relational Databases and SQL 507Introducing the Interfaces of JDBC 511Connecting to a Database 513Obtaining a Statement 518Executing a Statement 520Getting Data from a ResultSet 524Closing Database Resources 533Dealing with Exceptions 535Summary 536Exam Essentials 537Review Questions 539Appendix A Answers to Review Questions 547Chapter 1: Advanced Class Design 548Chapter 2: Design Patterns and Principles 550Chapter 3: Generics and Collections 553Chapter 4: Functional Programming 556Chapter 5: Dates, Strings, and Localization 558Chapter 6: Exceptions and Assertions 560Chapter 7: Concurrency 561Chapter 8: IO 565Chapter 9: NIO.2 568Chapter 10: JDBC 571Appendix B Study Tips 575Studying for the Test 576Taking the Test 582Appendix C Upgrading from Java 6 or Earlier 595Enhancing the Java Language 596Formatting and Parsing 603Applying Locks 607Understanding the Lock Framework 607Using a ReentrantLock 610Understanding Read/Write Locks 614Using a ReentrantReadWriteLock 615Working with Directories 617Summary 633Exam Essentials 633Review Questions 635Answers to Practice Test 645Index 649