The application scenario of the javaslang library in the Java library

Javaslang is a functional programming library that provides many useful functions and data types for the Java class library.This article will introduce some common application scenarios of the Javaslang library in the Java class library, and list the corresponding example code and related configuration to each scene. 1. Functional programming Example code: import javaslang.Function1; public class FunctionalProgrammingExample { public static void main(String[] args) { // Define a function Function1<Integer, Integer> addOne = (Integer x) -> x + 1; // Use function int result = addOne.apply(5); // 6 System.out.println(result); } } Example code: import javaslang.collection.List; public class CollectionOperationsExample { public static void main(String[] args) { // Create an inseparable list List<Integer> numbers = List.of(1, 2, 3, 4, 5); // Operate the collection List<Integer> doubledNumbers = numbers.map(x -> x * 2); System.out.println(doubledNumbers); // [2, 4, 6, 8, 10] int sum = numbers.fold(0, (x, y) -> x + y); System.out.println(sum); // 15 } } Example code: import javaslang.control.Try; public class ExceptionHandlingExample { public static void main(String[] args) { int result = Try.of(() -> { // May throw out the abnormal logic return Integer.parseInt("123"); System.out.println(result); // 123 } } Javaslang provides support for concurrent programming, including functional Future and Promise.Future indicates a calculation that may produce results, and Promise represents a commitment to future results.By using Javaslang's concurrent programming tools, we can write a concurrent program easier. Example code: import javaslang.concurrent.Future; public class ConcurrencyExample { public static void main(String[] args) { Future<String> future = Future.of(() -> { return "Hello, World!"; }); future.onComplete(result -> { // Processing asynchronous results System.out.println(result.get()); // Hello, World! }); } }