Derby provides
the message, SQLState values, and error codes in SQL exceptions.
Use the
getSQLState and
getMessage methods
to view the
SQLState and error messages. Use
getErrorCode to
see the error code. The error code defines the severity of the error and is
not unique to each exception.
Note: Severity is not standardized in Derby.
Applications should not depend on the severity returned from SQL exceptions.
Applications should also check for and process java.sql.SQLWarnings,
which are processed in a similar way. Derby issues
an SQLWarning if the create=true attribute
is specified and the database already exists.