Java tutorial
import java.net.URL; import java.net.URLConnection; public class Main { public static void main(String[] argv) throws Exception { int size; URL url = new URL("http://www.server.com"); URLConnection conn = url.openConnection(); size = conn.getContentLength(); if (size < 0) System.out.println("Could not determine file size."); else System.out.println(size); conn.getInputStream().close(); } }