请问以下C#代码的等效Java API是什么?我需要检查响应时间。
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(address);
System.Diagnostics.Stopwatch timer = new Stopwatch();
timer.Start();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
timer.Stop();
TimeSpan timeTaken = timer.Elapsed;
Thanks in advance.