import java.io.*;
		import java.util.*;
		
		class FirstCodeError	{

		 protected StringBuffer doErrorPage(Vector varNames, StringBuffer sb)	{
		   varNames.removeElementAt(4);
		   sb.append("Your request could not be handled due to the following required parameters being left empty:<br>");
		   Enumeration enum = varNames.elements();
		   while (enum.hasMoreElements())	 {
		     sb.append("Null Value in "+enum.nextElement()+ "<br>"); 
		     }
		    return sb;
		   }
		};