Content-Type の取得

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

public class tmp {
    public static void main(String[] args){
	try {
	    //String url = "http://d.hatena.ne.jp/hmwr_k/20090110/1231563213";
	    String url = "http://www.nara-tokusan.com/flash/top.swf";

	    URI uri = new URI(url);
	    HttpURLConnection connection = (HttpURLConnection)uri.toURL().openConnection();
	    String contentType = connection.getContentType();
	    System.out.println(contentType);
	} catch(Exception e){
	    System.err.println(e);
	}
    }
}