OCP Oracle Certified Professional Java SE 17 Developer Study Guide. Jeanne Boyarsky

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OCP Oracle Certified Professional Java SE 17 Developer Study Guide - Jeanne Boyarsky


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garbage collection 1, 7 Create classes and records, and define and use instance and static fields and methods, constructors, and instance and static initializers 5, 6, 7 Implement overloading, including var-arg methods 5 Understand variable scopes, use local variable type inference, apply encapsulation, and make objects immutable 1, 6, 7, 8 Implement polymorphism and differentiate object type versus reference type. Perform type casting, identify object types using instanceof operator and pattern matching 3, 6, 7 Create and use interfaces, identify functional interfaces, and utilize private, static, and default interface methods 7, 8 Create and use enumerations with fields, methods and constructors 7 Handling Exceptions Handle exceptions using try/catch/finally, try-with-resources, and multi-catch blocks, including custom exceptions 11 Working with Arrays and Collections Create Java arrays, List, Set, Map, and Deque collections, and add, remove, update, retrieve and sort their elements 4, 9 Working with Streams and Lambda expressions Use Java object and primitive Streams, including lambda expressions implementing functional interfaces, to supply, filter, map, consume, and sort data 10 Perform decomposition, concatenation and reduction, and grouping and partitioning on sequential and parallel streams 10, 13 Packaging and deploying Java code and use the Java Platform Module System Define modules and their dependencies, expose module content including for reflection. Define services, producers, and consumers 12 Compile Java code, produce modular and non-modular jars, runtime images, and implement migration using unnamed and automatic modules 12 Managing concurrent code execution Create worker threads using Runnable and Callable, manage the thread lifecycle, including automations provided by different Executor services and concurrent API 13 Develop thread-safe code, using different locking mechanisms and concurrent API 13 Process Java collections concurrently including the use of parallel streams 13 Using Java I/O API Read and write console and file data using I/O Streams 14 Serialize and de-serialize Java objects 14 Create, traverse, read, and write Path objects and their properties using java.nio.file API 14 Accessing databases using JDBC Create connections, create and execute basic, prepared and callable statements, process query results and control transactions using JDBC API 15 Implementing Localization Implement localization using locales, resource bundles, parse and format messages, dates, times, and numbers including currency and percentage values 11

      Java Foundations (1Z0-811)

      The following table provides a breakdown of this book's exam coverage for the Java Foundations (1Z0-811) exam, showing you the chapter where each objective or subobjective is covered.

      Note Icon A few topics


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