To provide customized error handling, implement this interface and
use the setErrorListener method to register an instance of the
implmentation with the {@link javax.xml.transform.Transformer}. The
Transformer then reports all errors and warnings through this
interface.
If an application does not register its own custom
ErrorListener, the default ErrorListener
is used which reports all warnings and errors to System.err
and does not throw any Exceptions.
Applications are strongly encouraged to register and use
ErrorListeners that insure proper behavior for warnings and
errors.
For transformation errors, a Transformer must use this
interface instead of throwing an Exception: it is up to the
application to decide whether to throw an Exception for
different types of errors and warnings. Note however that the
Transformer is not required to continue with the transformation
after a call to {@link #fatalError(TransformerException exception)}.
Transformers may use this mechanism to report XML parsing
errors as well as transformation errors.
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