Java 17: How to Resolve ClassNotFoundException for Custom ClassLoader with JAR Dependency?
I'm trying to debug I'm integrating two systems and I'm performance testing and I'm encountering a `ClassNotFoundException` when trying to load a JAR file that contains a custom class using a custom `ClassLoader`... I'm using Java 17 and my project structure has the custom classes in a JAR located in the `lib` directory. The goal is to dynamically load classes at runtime, but it seems like the JAR isn't being recognized properly. Here's a simplified version of my code: ```java import java.net.URL; import java.net.URLClassLoader; import java.io.File; public class CustomClassLoaderExample { public static void main(String[] args) { try { File jarFile = new File("lib/my-custom-lib.jar"); URL[] urls = { jarFile.toURI().toURL() }; URLClassLoader classLoader = new URLClassLoader(urls); Class<?> loadedClass = classLoader.loadClass("com.example.MyCustomClass"); System.out.println("Class loaded: " + loadedClass.getName()); } catch (Exception e) { e.printStackTrace(); } } } ``` When I run this, I receive the following error: `java.lang.ClassNotFoundException: com.example.MyCustomClass`. I've verified that the JAR file is correctly placed in the `lib` directory and contains the class `MyCustomClass`. Additionally, I've tried adjusting the classpath in my IDE but to no avail. Is there something I might be missing in the way I'm loading the class, or is there a different approach to ensure the JAR file is properly recognized? Any help would be greatly appreciated! Am I approaching this the right way? Is this even possible? I'm coming from a different tech stack and learning Java. Thanks for taking the time to read this!