Generates a random last name using Namey and Java

namey_random.java

import com.google.gson.Gson;
import com.google.gson.JsonArray;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * Project created by ExpDev
 */
public class RandomNameExample {

    private static final String USER_AGENT = "Mozilla/5.0";

    /**
     * Executed when program is ran
     *
     * @param args Additional arguments
     * @throws Exception If name can't be retrieved
     */
    public static void main(String[] args) throws Exception {
        // Initiate main class
        RandomNameExample nameExample = new RandomNameExample();

        // My minecraft name
        String mcName = "ExpDev";
        System.out.println("Hello there " + mcName + ". I will now try and get you a cool last name!");

        // Try and get a random last name for me
        try {
            // My random generated last name
            String lastname = nameExample.getRandomLastname(Frequency.ALL);

            System.out.println("Woop woop, the US Census Bureau database has decided that " + lastname + " would be a cool last name for you.");
            System.out.println("Welcome to the server, " + mcName + " " + lastname + ". Hope you have fun!");
        } catch (Exception e) {
            System.out.println("Could not fetch a random last name for you: " + e.getMessage() + ".");
        }
    }

    /**
     * Generates a random last name based on the US Census Bureau database for names
     *
     * @return A random last name
     * @throws Exception If name can't be retrieved or connection to API fails
     */
    private String getRandomLastname(Frequency frequency) throws Exception {
        String url = "http://namey.muffinlabs.com/name.json?count=1&type=surname&frequency=" + frequency.name();

        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

        // optional default is GET
        con.setRequestMethod("GET");

        //add request header
        con.setRequestProperty("User-Agent", USER_AGENT);

        // Read stream
        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuilder response = new StringBuilder();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        // Parse the json array returned
        JsonArray array = new Gson().fromJson(response.toString(), JsonArray.class);

        // Return the last name
        return array.get(0).getAsString();
    }

    /**
     * Frequency for a random name call
     */
    public enum Frequency {
        ALL,
        COMMON,
        RARE
    }

}