// Reading a WWW page trying again if the URL is malformed
// Barry Cornelius, 23rd November 1999
import java.io.   BufferedReader;
import java.io.   InputStream;
import java.io.   InputStreamReader;
import java.io.   IOException;
import java.net.  MalformedURLException;
import java.util. Properties;
import java.net.  URL;
public class WWWTryAgain
{
   public static void main(final String[] pArgs)
   {
      InputStream tInputStream = iGetInputStreamForWebPage();
      iReadTheWebPage(tInputStream);
   }
   private static InputStream iGetInputStreamForWebPage()
   {
      // you will need to uncomment the following three statements
      // if your access to the WWW is through a proxy machine
      // you will have to replace proxymachine.sitename.com
      // and 8080 with appropriate values for your site
      // final Properties tProperties = System.getProperties();
      // tProperties.put("http.proxyHost", "proxymachine.sitename.com");
      // tProperties.put("http.proxyPort", "8080");
      final BufferedReader tKeyboard = 
            new BufferedReader(new InputStreamReader(System.in));
      String tUrlString = null;
      URL tUrl = null;
      InputStream tInputStream = null;
      while (true)
      {
         System.out.print("URL? ");
         try
         {
            tUrlString = tKeyboard.readLine();
            tUrl = new URL(tUrlString);
            tInputStream = tUrl.openStream();
	    break;
         }
         catch(MalformedURLException pMalformedURLException)
         {
            System.out.println("MalformedURLException occurred");
         }
         catch(IOException pIOException)
         {
            System.out.println("IOException occurred");
            System.exit(2);
         }
      }
      return tInputStream;
   }
   private static void iReadTheWebPage(InputStream pInputStream)
   {
      final BufferedReader tWebPage = 
            new BufferedReader(new InputStreamReader(pInputStream));
      try
      {
         while (true)
         {
            String tLine = tWebPage.readLine();
            if ( tLine == null )
            {
               break;
            }
            System.out.println(tLine);
         }
      }
      catch(IOException pIOException)
      {
         System.out.println("IOException occurred later");
         System.exit(3);
      }
   }
}