我正在使用selenium库进行测试。但是下面的代码给了我类强制转换异常。我已经用谷歌搜索了这个异常，但是没有得到解决方案。我对Https连接和http连接感到困惑。帮助我解决此异常。谢谢

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import sun.net.www.protocol.http.HttpURLConnection;


public class TestMakeMySushi {

  private static final String HttpURLConnection = null;

   public static void main(String[] args) throws InterruptedException, MalformedURLException, IOException {

    System.setProperty("webdriver.chrome.driver", "C:\\Users\\Dev-24\\Downloads\\chromedriver.exe");
    WebDriver driver = new ChromeDriver();
    driver.manage().window().maximize();
    driver.manage().deleteAllCookies();
    driver.manage().timeouts().pageLoadTimeout(30, TimeUnit.SECONDS);
    driver.manage().timeouts().implicitlyWait(40, TimeUnit.SECONDS);
    driver.get("https://www.makemysushi.com/404?");

    List<WebElement> linklist = driver.findElements(By.tagName("a"));
    linklist.addAll(driver.findElements(By.tagName("img")));
    System.out.println("size of all link and images list" + linklist.size());
    List<WebElement> activelist = new ArrayList<WebElement>();

    for (int i = 0; i < linklist.size(); i++) {
        System.out.println(linklist.get(i).getAttribute("href"));
        if (linklist.get(i).getAttribute("href") != null && (!linklist.get(i).getAttribute("href").contains("javascript"))) {
            activelist.add(linklist.get(i));
        }
    }


    System.out.println("size of activelink list" + activelist.size());


    for (int j = 0; j < activelist.size(); j++) {

        HttpURLConnection connection = (HttpURLConnection) new URL(activelist.get(j).getAttribute("href")).openConnection();
        connection.connect();
        String response = connection.getResponseMessage();
        connection.disconnect();
        System.out.println(activelist.get(j).getAttribute("href") + "----" + response);
    }
}
}

我面临的例外

Exception in thread "main" java.lang.ClassCastException:   sun.net.www.protocol.https.HttpsURLConnectionImpl cannot be cast to sun.net.www.protocol.http.HttpURLConnection
at TestMakeMySushi.main(TestMakeMySushi.java:76)
C:\Users\Dev-24\AppData\Local\NetBeans\Cache\8.1\executor-snippets\run.xml:53: Java returned: 1