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

public class grabFile {
	public static void main(String[] args) throws Exception {
		if(args.length < 2) {
			System.out.println("Usage: java grabFile <URL> <File>");
			System.exit(1);
		}

		URL myFile = new URL(args[0]);
		URLConnection cc = myFile.openConnection();

		int inputNums;

		try {
			// Open two streams. one for file output one for URI input.
			DataOutputStream Fout = new DataOutputStream(new FileOutputStream(args[1]));
			DataInputStream in = new DataInputStream(cc.getInputStream());

			// While the stream is not -1 (EOF)
			while((inputNums = in.read()) != -1) {
				// Write to the picture file
				Fout.write(inputNums);
			}

			// Clean up.
			Fout.flush();
			in.close();
			Fout.close();
			// ... and a little message
			System.out.println("Done.");
		}

		catch (Exception e) {
			System.err.println("Bah!" + e);
		}
	}
}