Java URLConnection class

// Demonstrate URLConnection. 
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.Date;

public class Main {
   public static void main(String args[]) throws Exception {
      int c;/*from ww w .  j  av  a2 s  . c o  m*/
      URL hp = new URL("http://www.google.com");
      URLConnection hpCon = hp.openConnection();

      // get date
      long d = hpCon.getDate();
      if (d == 0)
         System.out.println("No date information.");
      else
         System.out.println("Date: " + new Date(d));

      // get content type
      System.out.println("Content-Type: " + hpCon.getContentType());

      // get expiration date
      d = hpCon.getExpiration();
      if (d == 0)
         System.out.println("No expiration information.");
      else
         System.out.println("Expires: " + new Date(d));

      // get last-modified date
      d = hpCon.getLastModified();
      if (d == 0)
         System.out.println("No last-modified information.");
      else
         System.out.println("Last-Modified: " + new Date(d));

      // get content length
      long len = hpCon.getContentLengthLong();
      if (len == -1)
         System.out.println("Content length unavailable.");
      else
         System.out.println("Content-Length: " + len);

      if (len != 0) {
         System.out.println("=== Content ===");
         InputStream input = hpCon.getInputStream();

         while (((c = input.read()) != -1)) {
            System.out.print((char) c);
         }
         input.close();

      } else {
         System.out.println("No content available.");
      }

   }
}