Parsing a Nested YAML Configuration File in Java - guide with List of Maps
I'm relatively new to this, so bear with me. I've been researching this but I'm having trouble parsing a YAML configuration file that contains a nested structure with lists of maps in Java... The YAML file looks like this: ```yaml services: - name: serviceA endpoints: - url: http://api.serviceA.com method: GET - url: http://api.serviceA.com/submit method: POST - name: serviceB endpoints: - url: http://api.serviceB.com method: GET ``` I'm using the `snakeyaml` library (version 1.29) for parsing, and here's the code snippet I'm trying: ```java import org.yaml.snakeyaml.Yaml; import java.io.InputStream; import java.util.List; import java.util.Map; public class YamlParser { public static void main(String[] args) { Yaml yaml = new Yaml(); InputStream inputStream = YamlParser.class.getClassLoader().getResourceAsStream("config.yaml"); Map<String, List<Map<String, Object>>> data = yaml.load(inputStream); System.out.println(data); } } ``` When I run this code, I get the following behavior: ``` Exception in thread "main" java.lang.ClassCastException: java.util.LinkedHashMap want to be cast to java.util.List ``` I've tried modifying the YAML structure, but I'm still getting the same behavior. I suspect the scenario might be with how I'm defining the data types in the `Map`. Should I be using more specific types for the endpoints list? Or is there a better way to handle this nested structure? Any insights would be greatly appreciated! This is for a CLI tool running on macOS. The project is a desktop app built with Java. Any feedback is welcome!