Java示例文件修改时间

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);

   }

}