Server.java

package com.example.package.name;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class Server {
    public static class Result {
        public int code;
        public InputStream stream;
    }

    public static Result get(String url) {
        try {
            HttpURLConnection connection = (HttpURLConnection)new URL(url).openConnection();
            connection.setDoInput(true);
            connection.connect();

            Result result = new Result();
            result.code = connection.getResponseCode();

            if (result.code == 200)
                result.stream = connection.getInputStream();
            else
                result.stream = connection.getErrorStream();

            return result;
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }

    public static boolean ping() {
        Result result = get("http://www.google.com");
        return result != null && result.code == 200;
    }
}