import java.sql.*;

public class ParamTypeProb {

	public static void main(String args[]) throws Exception {
		Class.forName("org.postgresql.Driver");
		Connection conn = DriverManager.getConnection("jdbc:postgresql://localhost:5820/jurka?loglevel=2&prepareThreshold=1", "jurka","");

		Statement stmt = conn.createStatement();
		stmt.execute("CREATE TEMP TABLE tt (a text, b date)");
		stmt.close();

		PreparedStatement ps = conn.prepareStatement("INSERT INTO tt VALUES (?, ?)");
		ps.setString(1, "a");
		ps.setDate(2, new Date(0));
		ps.addBatch();

		ps.setClob(1, null);
		ps.setNull(2, Types.DATE);
		ps.addBatch();

		ps.executeBatch();

		ps.setString(1, "b");
		ps.setDate(2, new Date(0));
		ps.executeUpdate();

		ps.close();
		conn.close();
	}
}