import java.sql.*;

public class SetObjectTest {

	public static void main(String args[]) throws Exception {
		Class.forName("org.postgresql.Driver");

		Connection conn = DriverManager.getConnection("jdbc:postgresql://[::1]:5432/jurka", "jurka", "");

		Statement stmt = conn.createStatement();
		stmt.execute("CREATE TEMP TABLE sot(a int)");
		stmt.close();

		PreparedStatement ps = conn.prepareStatement("INSERT INTO sot VALUES (?)");

		ps.setObject(1, "1", 3);
		ps.executeUpdate();

		ps.setObject(1, "A", 3);
		ps.executeUpdate();

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

}