Retrieves the value of a JDBC DATALINK parameter as a java.net.URL object.

Parameters:

parameterName the name of the parameter

Returns: the parameter value as a java.net.URL object in the Java programming language. If the value was SQL NULL, the value null is returned.

Exceptions:

SQLException if parameterName does not correspond to a named parameter; if a database access error occurs, this method is called on a closed CallableStatement, or if there is a problem with the URL

SQLFeatureNotSupportedException if the JDBC driver does not support this method

`SQLException`		if parameterName does not correspond to a named parameter; if a database access error occurs, this method is called on a closed `CallableStatement`, or if there is a problem with the URL
`SQLFeatureNotSupportedException`		if the JDBC driver does not support this method