Java示例文件修改时间1

import java.net.URL;
import java.net.URLConnection;

public class Main {
   public static void main(String[] argv)throws Exception {
      URL u = new URL("http://127.0.0.1/java.bmp");
      URLConnection uc = u.openConnection();
      uc.setUseCaches(false);
      long timestamp = uc.getLastModified();
      System.out.println("The last modification time of java.bmp is :"+timestamp);
   }
}