Modern Java recipes : simple solutions to difficult problems in Java 8 and 9

Copyright Table of Contents Foreword Preface Modern Java Who Should Read This Book How This Book Is Organized Conventions Used in This Book Using Code Examples O'Reilly Safari How to Contact Us Acknowledgments Chapter 1. The Basics 1.1 Lambda Expressions Problem Solution Discussion 1.2 Method References Problem Solution Discussion See Also 1.3 Constructor References Problem Solution Discussion See Also 1.4 Functional Interfaces Problem Solution Discussion See Also 1.5 Default Methods in Interfaces Problem Solution Discussion See Also. 1.6 Static Methods in InterfacesProblem Solution Discussion See Also Chapter 2. The java.util.function Package 2.1 Consumers Problem Solution Discussion See Also 2.2 Suppliers Problem Solution Discussion See Also 2.3 Predicates Problem Solution Discussion See Also 2.4 Functions Problem Solution Discussion See Also Chapter 3. Streams 3.1 Creating Streams Problem Solution Discussion See Also 3.2 Boxed Streams Problem Solution Discussion See Also 3.3 Reduction Operations Using Reduce Problem Solution Discussion See Also 3.4 Check Sorting Using Reduce. ProblemSolution Discussion See Also 3.5 Debugging Streams with peek Problem Solution Discussion 3.6 Converting Strings to Streams and Back Problem Solution Discussion See Also 3.7 Counting Elements Problem Solution Discussion See Also 3.8 Summary Statistics Problem Solution Discussion See Also 3.9 Finding the First Element in a Stream Problem Solution Discussion See Also 3.10 Using anyMatch, allMatch, and noneMatch Problem Solution Discussion See Also 3.11 Stream flatMap Versus map Problem Solution Discussion See Also 3.12 Concatenating Streams Problem. SolutionDiscussion See Also 3.13 Lazy Streams Problem Solution Discussion See Also Chapter 4. Comparators and Collectors 4.1 Sorting Using a Comparator Problem Solution Discussion 4.2 Converting a Stream into a Collection Problem Solution Discussion See Also 4.3 Adding a Linear Collection to a Map Problem Solution Discussion See Also 4.4 Sorting Maps Problem Solution Discussion See Also 4.5 Partitioning and Grouping Problem Solution Discussion See Also 4.6 Downstream Collectors Problem Solution Discussion See Also 4.7 Finding Max and Min Values Problem. SolutionDiscussion See Also 4.8 Creating Immutable Collections Problem Solution Discussion See Also 4.9 Implementing the Collector Interface Problem Solution Discussion See Also Chapter 5. Issues with Streams, Lambdas, and Method References 5.1 The java.util. Objects Class Problem Solution Discussion 5.2 Lambdas and Effectively Final Problem Solution Discussion See Also 5.3 Streams of Random Numbers Problem Solution Discussion See Also 5.4 Default Methods in Map Problem Solution Discussion 5.5 Default Method Conflict Problem Solution Discussion See Also. Need simple solutions to specific challenges with Java 8 and Java 9? This book of practical recipes provides a quick, easy reference for developers who prefer useful examples over detailed explanations. It shows you how to solve a wide range of problems using the newest features of Java. The introduction of functional programming concepts in Java SE 8 was a drastic change for this venerable object-oriented language. Lambda expressions, method references, and streams fundamentally changed the idioms of the language, and many developers have been trying to catch up ever since. This cookbook will help. With more than 70 detailed recipes, author Ken Kousen shows you how to use the newest features of Java to solve a wide range of problems. For developers comfortable with previous Java versions, this guide covers nearly all of Java SE 8, and includes a chapter focused on changes coming in Java 9. Need to understand how functional idioms will change the way you write code? This cookbookchock full of use casesis for you. Recipes cover:The basics of lambda expressions and method references Interfaces in the java.util.function package Stream operations for transforming and filtering data Comparators and Collectors for sorting and converting streaming data Combining lambdas, method references, and streams Creating instances and extract values from Javas Optional type New I/O capabilities that support functional streams The Date-Time API that replaces the legacy Date and Calendar classes Mechanisms for experimenting with concurrency and parallelism The introduction of functional programming concepts in Java SE 8 was a drastic change for this venerable object-oriented language. Lambda expressions, method references, and streams fundamentally changed the idioms of the language, and many developers have been trying to catch up ever since. This cookbook will help. With more than 70 detailed recipes, author Ken Kousen shows you how to use the newest features of Java to solve a wide range of problems. For developers comfortable with previous Java versions, this guide covers nearly all of Java SE 8, and includes a chapter focused on changes coming in Java 9. Need to understand how functional idioms will change the way you write code? This cookbook—chock full of use cases—is for you. Recipes cover: The basics of lambda expressions and method references Interfaces in the java.util.function package Stream operations for transforming and filtering data Comparators and Collectors for sorting and converting streaming data Combining lambdas, method references, and streams Creating instances and extract values from Java's Optional type New I/O capabilities that support functional streams The Date-Time API that replaces the legacy Date and Calendar classes Mechanisms for experimenting with concurrency and parallelism