Core Java for the Impatient, 3rd Edition

Clear, Concise Guide to the Core Language and Libraries--Updated through Java 17 Modern Java introduces major enhancements that impact the core Java technologies and APIs at the heart of the Java platform. Many old Java idioms are no longer needed, and new features and programming paradigms can make you far more effective. However, navigating these changes can be challenging. Core Java for the Impatient, Third Edition, is a complete yet concise guide that reflects all changes through Java SE 17, Oracle's latest Long-Term Support (LTS) release. Written by Cay S. Horstmann--author of the classic two-volume Core Java--this indispensable tutorial offers a faster, easier pathway for learning modern Java. Horstmann covers everything working developers need to know, including the powerful concepts of lambda expressions and streams, modern constructs such as records and sealed classes, and sophisticated concurrent programming techniques. Given the size and scope of Java 17, there's plenty to cover, but it's presented in small chunks organized for quick access and easy understanding, with plenty of practical insights and sample code to help you quickly apply all that's new. Test code as you create it with JShell Improve your object-oriented design with records and sealed classes Effectively use text blocks, switch expressions, and pattern matching Understand functional programming with lambda expressions Streamline and optimize data management with the Streams API Use modern library features and threadsafe data structures to implement concurrency reliably Work with the modularized Java API and third-party modules Take advantage of API improvements for working with collections, input/output, regular expressions, and processes Learn the APIs for date/time processing and internationalization Whether you're an experienced developer just getting started with modern Java, or have been programming with Java for years, this guide will help you write more robust, efficient, and secure Java code. Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details Title Page Contents Table of Contents Preface Acknowledgments About the Author Chapter 1. Fundamental Programming Structures 1.1. Our First Program 1.2. Primitive Types 1.3. Variables 1.4. Arithmetic Operations 1.5. Strings 1.6. Input and Output 1.7. Control Flow 1.8. Arrays and Array Lists 1.9. Functional Decomposition Exercises Chapter 2. Object-Oriented Programming 2.1. Working with Objects 2.2. Implementing Classes 2.3. Object Construction 2.4. Records 2.5. Static Variables and Methods 2.6. Packages 2.7. Nested Classes 2.8. Documentation Comments Exercises Chapter 3. Interfaces and Lambda Expressions 3.1. Interfaces 3.2. Static, Default, and Private Methods 3.3. Examples of Interfaces 3.4. Lambda Expressions 3.5. Method and Constructor References 3.6. Processing Lambda Expressions 3.7. Lambda Expressions and Variable Scope 3.8. Higher-Order Functions 3.9. Local and Anonymous Classes Exercises Chapter 4. Inheritance and Reflection 4.1. Extending a Class 4.2. Inheritance Hierarchies 4.3. Object: The Cosmic Superclass 4.4. Enumerations 4.5. Runtime Type Information and Resources 4.6. Reflection Exercises Chapter 5. Exceptions, Assertions, and Logging 5.1. Exception Handling 5.2. Assertions 5.3. Logging Exercises Chapter 6. Generic Programming 6.1. Generic Classes 6.2. Generic Methods 6.3. Type Bounds 6.4. Type Variance and Wildcards 6.5. Generics in the Java Virtual Machine 6.6. Restrictions on Generics 6.7. Reflection and Generics Exercises Chapter 7. Collections 7.1. An Overview of the Collections Framework 7.2. Iterators 7.3. Sets 7.4. Maps 7.5. Other Collections 7.6. Views Exercises Chapter 8. Streams 8.1. From Iterating to Stream Operations 8.2. Stream Creation 8.3. The filter, map, and flatMap Methods 8.4. Extracting Substreams and Combining Streams 8.5. Other Stream Transformations 8.6. Simple Reductions 8.7. The Optional Type 8.8. Collecting Results 8.9. Collecting into Maps 8.10. Grouping and Partitioning 8.11. Downstream Collectors 8.12. Reduction Operations 8.13. Primitive Type Streams 8.14. Parallel Streams Exercises Chapter 9. Processing Input and Output 9.1. Input/Output Streams, Readers, and Writers 9.2. Paths, Files, and Directories 9.3. HTTP Connections 9.4. Regular Expressions 9.5. Serialization Exercises Chapter 10. Concurrent Programming 10.1. Concurrent Tasks 10.2. Asynchronous Computations 10.3. Thread Safety 10.4. Parallel Algorithms 10.5. Threadsafe Data Structures 10.6. Atomic Counters and Accumulators 10.7. Locks and Conditions 10.8. Threads 10.9. Processes Exercises Chapter 11. Annotations 11.1. Using Annotations 11.2. Defining Annotations 11.3. Standard Annotations 11.4. Processing Annotations at Runtime 11.5. Source-Level Annotation Processing Exercises Chapter 12. The Date and Time API 12.1. The Time Line 12.2. Local Dates 12.3. Date Adjusters 12.4. Local Time 12.5. Zoned Time 12.6. Formatting and Parsing 12.7. Interoperating with Legacy Code Exercises Chapter 13. Internationalization 13.1. Locales 13.2. Number Formats 13.3. Currencies 13.4. Date and Time Formatting 13.5. Collation and Normalization 13.6. Message Formatting 13.7. Resource Bundles 13.8. Character Encodings 13.9. Preferences Exercises Chapter 14. Compiling and Scripting 14.1. The Compiler API 14.2. The Scripting API Exercises Chapter 15. The Java Platform Module System 15.1. The Module Concept 15.2. Naming Modules 15.3. The Modular “Hello, World!” Program 15.4. Requiring Modules 15.5. Exporting Packages 15.6. Modules and Reflective Access 15.7. Modular JARs 15.8. Automatic Modules 15.9. The Unnamed Module 15.10. Command-Line Flags for Migration 15.11. Transitive and Static Requirements 15.12. Qualified Exporting and Opening 15.13. Service Loading 15.14. Tools for Working with Modules Exercises