Retrieves the value of a JDBC CHAR, VARCHAR, or LONGVARCHAR parameter as a String in the Java programming language.

For the fixed-length type JDBC CHAR, the String object returned has exactly the same value the SQL CHAR value had in the database, including any padding added by the database.

Parameters:

parameterName the name of the parameter

Returns: the parameter value. If the value is SQL NULL, the result is null.

Exceptions:

SQLException if parameterName does not correspond to a named parameter; if a database access error occurs or this method is called on a closed CallableStatement

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 or this method is called on a closed `CallableStatement`
`SQLFeatureNotSupportedException`		if the JDBC driver does not support this method