Java Network - 如何检测具有文件扩展名的URL

import java.net.URI;

public class Main {
  public static void main(String... args) throws Exception {
    String url = "http://www.w3cschool.cn/Tutorials/Java/Algorithms_How_to/index.htm";
    URI u = new URI(url);
    for (String ext : new String[] { ".png", ".pdf", ".jpg", ".html","htm" }) {
      if (u.getPath().endsWith(ext)) {
        System.out.println("Yeap");
        break;
      }
    }
  }
}