I need to activate Cross-Origin Resource Sharing (CORS) for my Java-based web application in order to accept queries from other domains. I'm taking Scaler's web development roadmap as a guide, but I'm not sure how to properly integrate CORS in my Java application. Could someone guide me on how to enable CORS in a Java web application using servlets or other Java frameworks? Are there any best practices or libraries to simplify the process?

Here's a snippet of my Java code using Servlets:

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
 
@WebServlet("/example")
public class ExampleServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // Code to handle the GET request
        // ...
    }
 
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // Code to handle the POST request
        // ...
    }
}

I want to ensure my web application can receive requests from a different domain without CORS-related issues. Any help with code examples or recommended practices for implementing CORS in a Java web application would be highly appreciated. Thank you for your expertise!

Note: The Java code provided above is just a simplified example, and my actual application may involve more complex servlets and logic