Java Programming Interview Questions and Answers


How to Retrieve Warnings?

SQLWarning objects are a subclass of SQLException that deal with database access
warnings. Warnings do not stop the execution of an application, as exceptions do;
they simply alert the user that something did not happen as planned. A warning can
be reported on a Connection object, a Statement object (including PreparedStatement
and CallableStatement objects), or a ResultSet object. Each of these classes has
a getWarnings method, which you must invoke in order to see the first warning reported
on the calling object

SQLWarning warning = stmt.getWarnings();

if (warning != null)


while (warning != null)


System.out.println("Message: " + warning.getMessage());

System.out.println("SQLState: " + warning.getSQLState());

System.out.print("Vendor error code: ");


warning = warning.getNextWarning();



Posted by:Richards