gistfile1.java

import com.ning.http.client.AsyncCompletionHandler;
import com.ning.http.client.AsyncHttpClient;
import com.ning.http.client.Request;
import com.ning.http.client.Response;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Future;

public class Problem {

    public static void main(String[] args) throws Exception {
        AsyncHttpClient client = new AsyncHttpClient();

        Request request = client
                .prepareGet(String.format("http://example.com/"))
                .build();

        List<Future<String>> fs = new ArrayList<Future<String>>();
        for (int i = 0; i < 7; i++) {
            fs.add(client.executeRequest(request, new AsyncCompletionHandler<String>() {
                @Override
                public String onCompleted(Response response) throws Exception {
                    return response.getResponseBody();
                }
            }));
        }

        for (Future<String> f : fs) {
            System.out.println(f.get());
        }

        client.close();
        System.out.println("Exiting...");
    }
}