Error Handler

• We catch the errors by implementing an error handler and passing it to the parser.
• The error handler must extend DefaultHandler.

import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.SAXParseException;

/** A simple error handlier which just prints out
    the errors. */
public class ErrorChecker extends DefaultHandler
{

  public ErrorChecker() {
  }
   
  public void error (SAXParseException e) {
    System.out.println("Parsing error:  "+e.getMessage());
  }

  public void warning (SAXParseException e) {
    System.out.println("Parsing problem:  "+e.getMessage());
  }

  public void fatalError (SAXParseException e) {
    System.out.println("Parsing error:  "+e.getMessage());
    System.out.println("Cannot continue.");
    System.exit(1);
  }
}