Reading a page header with getHeaderField()

Question

How can I read the file header of a page using getHeaderField()? I'm new to java and I guess this is a pretty easy thing to do. What I want to do is to read the header "tems" but exactly how should I write my program? Any help would be appreciated.

Answer 1

import java.net.*;
public class PrintHeaders {
    public static void main(String[] args) throws Exception {
        URL url = new URL(args[0]);
        HttpURLConnection.setFollowRedirects(false);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        String header = connection.getHeaderField(0);
        System.out.println(header);
        System.out.println("---Start of headers---");
        int i = 1;
        while ((header = connection.getHeaderField(i)) != null) {
            String key = connection.getHeaderFieldKey(i);
            System.out.println(((key==null) ? "" : key + ": ") + header);
            i++;
        System.out.println("---End of headers---");
}