java program to check a file is modified at a server or not

java program

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);
	}
}

Output

The last modification time of java.bmp is :24 May 2009 12:14:50