How Oracle JDBC driver determine DATE data type parameter if it is not specified

Hello,
Oracle JDBC driver determine the DATE data type of parameter correctly without any typecasting.
Example:
ps = conn.prepareStatement("SELECT ? FROM DUAL");
ps.setObject(1, Date.valueOf("2014-01-11"));
How Oracle JDBC driver determine the DATE data type of parameter.
Thought?
Regards,
Vinayak

Oracle JDBC driver determine the DATE data type of parameter correctly without any typecasting.
Example:
ps = conn.prepareStatement("SELECT ? FROM DUAL");
ps.setObject(1, Date.valueOf("2014-01-11"));
How Oracle JDBC driver determine the DATE data type of parameter.
Your question isn't clear. If the driver is doing it correctly what PROBLEM are you having? What exactly do you consider 'correct'? What results are you getting? What driver name and version are you using? What Oracle DB version are you using?
For the code you use above the 'Date' you specify is a java.sql.Date instance
http://docs.oracle.com/javase/8/docs/api/java/sql/Date.html#valueOf-java.lang.String-
public static Date valueOf(String s)
Converts a string in JDBC date escape format to a Date value.
Parameters:
s - a String object representing a date in in the format "yyyy-[m]m-[d]d". The leading zero for mm and dd may also be omitted.
Returns:
a java.sql.Date object representing the given date
The JDBC Dev Guide shows that is mapped to an oracle.sql.DATE
http://docs.oracle.com/cd/E11882_01/java.112/e16548/datacc.htm#g1028145
Oracle DATE datatypes have both date and time components. Depending on the JDBC driver version and DB version you are using an Oracle date could be mapped to a Java Date (which does NOT have a time component) or, for current versions, would be considered a timestamp..

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