import java.io.*;
import java.net.*;

public class Downloader {

    // small HTTP (web) client similar to wget program
    private static void download(String url) throws Exception {

        URL myURL = new URL(url);  // getFile() ==> filename

        URLConnection myConn = myURL.openConnection();

        // 1KB = 1024 Bytes (1 Byte = 8 bits)
        double totalSize = myConn.getContentLength();

        // network reader
        InputStream netIn = myURL.openStream();

        String fname = myURL.getFile();
        System.out.println("downloading " + fname);

    }

    public static void main(String[] args) throws Exception {
        String url = "http://www.cs.gettysburg.edu/~skim/cs112/hws/hw3/Cat.gif";

        download(url);

        //new Downloader().download(url);  // if download(..) is not static

    }

}