Các proxy dân dụng giúp hoàn thành công việc.

				
					// Targeting set in the username:
// cc=country, c=city, r=region, isp=ISP, s=session
import java.net.*;
import java.net.http.*;
 
public class ProxyExample {
    public static void main(String[] args) throws Exception {
        String username = "cc=us-c=atlanta";
 
        Authenticator auth = new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(
                    username,
                    "YOUR_PASSWORD".toCharArray()
                );
            }
        };
 
        HttpClient client = HttpClient.newBuilder()
            .proxy(ProxySelector.of(new InetSocketAddress("res.ipb.cloud", 1080)))
            .authenticator(auth)
            .build();
 
        HttpRequest req = HttpRequest.newBuilder()
            .uri(URI.create("https://api.ipify.org"))
            .build();
 
        HttpResponse<String> res = client.send(req, HttpResponse.BodyHandlers.ofString());
        System.out.println("IP: " + res.body());
    }
}