public DefaultErrorHandler() 
{
        this(new PrintWriter(System.err));
}

Constructs an error handler that prints error messages to System.err.

 public DefaultErrorHandler(PrintWriter out) 
{
        fOut = out;
}

Constructs an error handler that prints error messages to the specified PrintWriter.

 public  void error(String domain,
    String key,
    XMLParseException ex) throws XNIException 
{
        printError("Error", ex);
}

Error.

 public  void fatalError(String domain,
    String key,
    XMLParseException ex) throws XNIException 
{
        printError("Fatal Error", ex);
        throw ex;
}

Fatal error.

 public  void warning(String domain,
    String key,
    XMLParseException ex) throws XNIException 
{
        printError("Warning", ex);
}

Warning.