To use the Javaslang framework in the Java project, we first need to introduce Javaslang dependencies in the project dependency management tool.You can use Maven or Gradle to manage the dependence of the project. Introducing javaslang dependencies in Maven can add the following code fragments to the pom.xml file of the project: <dependencies> <dependency> <groupId>io.javaslang</groupId> <artifactId>javaslang</artifactId> <version>4.8.0</version> </dependency> </dependencies> Introducing Javaslang's dependencies in Gradle can add the following code fragments to the project's Build.gradle file: gradle dependencies { implementation 'io.javaslang:javaslang:4.8.0' } Step 2: Use Javaslang framework Once Javaslang's dependence is successfully introduced, the Javaslang framework can be used in the Java project.The following is a simple example code, showing some of the basic functions of Javaslang: import javaslang.collection.List; import javaslang.control.Option; public class JavaslangExample { public static void main(String[] args) { // Use the list of javaslang List<String> list = List.of("Hello", "World"); List<String> transformedList = list.map(String::toUpperCase); Transformedlist.Foreach (System.out :: Println); // Output hello and worldd // Use Javaslang's option Option<String> maybeValue = Option.of("Javaslang"); String value = maybeValue.getOrElse("Default Value"); System.out.println (value); // Output javaslang } } In the above example code, we first introduced the two commonly used Javaslang classes, `javaslang.collection.list` and` javaslang.control.Option`.Then, we created an object of the `List <string>` and using the `Map` method to convert the string elements in it into uppercase form and print it.Next, we created a `Option <string> object and using the` Getorelse` method to obtain the value. If the value does not exist, return the silent value. Configuration: -If you are using a version of Java 8 or above, no additional configuration is required. -If you use the earlier version of Java, you need to add Javaslang's Retrolambda to the project to configure it.For details, please refer to the official Javaslang document. Summarize This article introduces how to introduce and use the Javaslang framework in the Java project.You need to introduce the dependencies of JavaSlang in the project dependency management tool, and then you can use the unable variable data types and functional programming methods provided by Javaslang in the code.By using Javaslang, you can write more readable and maintainable code and enjoy the benefits of functional programming.