Fatal error while parsing xml

[aashu dwivedi]

i am using the following code

 
  try{
      imdbSearch=new XmlParser().parseText(response);
      }catch(Exception e){
          println "error in parsing the search output"
      }
    }
 

to parse the output obtained by an imdb movie rating service which sometimes happen to send an HTML output breaking the above code
producing a

[Fatal Error] :1:2623: The entity "nbsp" was referenced, but not declared.
error in parsing the search outputorg.xml.sax.SAXParseException: The entity "nbsp" was referenced, but not declared.

as you can see the line "error parsing the search output " is generated by the catch block written by me but even when the exception is cought the program stops because of the fatal error i am not able to understand why is it so and what might solve the problem guys please help.

[aashu dwivedi]

seems like the problem was with the Error handler interface .
creating a seperate ErrorHandler class and registering it with parser solved the problem

def parser=new XmlParser();
parser.setErrorHandler(new ErrorHandler());
parser.parseText(string);

while As documented at http://java.sun.com/j2se/1.4.2/docs/api/org/xml/sax/ErrorHandler.html
the ErrorHandler interface requires one to implement the following methods
eror();
fatalerror();
warning();

[aashu dwivedi]

but i was wondering why a different ErrorHandler Interface is needed instead of regular Exception mechanism of java ?