java - JSP simple insertion cannot run in class -

I'm trying to do a simple entry like

  string sql = "user Include in the bank (firstname, lastname, gender, mobile, email) value "(,,,,, ????); Int rows = 0; Try {PreparedStatement stmt = con.prepareStatement (SQL); Stmt.setString (1, "ABC"); Stmt.setString (2, "ABC"); Stmt.setString (3, "ABC"); Stmt.setString (4, "ABC"); Stmt.setString (5, "ABC"); Affect rows = stmt.executeUpdate (); } Hold (SQLException e) {e.printstaxtrace (); }  

and its works and able to insert . But when I'm trying this approach in the top like below

  public class user {...} public class banker user {... public int store (connection con) {string} SQL = "Include the UserBanker (first name, last name, gender, mobile, email) Price (?,?,?,?,??)"; Int rows = 0; Try {PreparedStatement stmt = con.prepareStatement (SQL); Stmt.setString (1, super.getFirstName ()); Stmt.setString (2, super.getLlastName ()); Stmt.setString (3, super.getGender ()); Stmt.setString (4, this.getMobile ()); Stmt.setString (5, this.getEmail ()); Affect rows = stmt.executeUpdate (); } Hold (SQLException e) {e.printstaxtrace (); } Affecting the return lines; } ...} End of   
 and I call it like this below  
  banker B1 = new banker (); ... Set all values ​​... b1.store (con);  
 
 Upper script above  always returns unexpected results which is 0. The OOP script above gives always unexpected results which is 0. 
  
 This is because your  try  is blocked and you are swallowing it in the  hold  block, thus affecting the  rows  retains its initial value. 
 
 The exception being thrown is due to a syntax error in your  insert  statement parameter markers ? Single quotes  '?' From  Remove  and let JDBC do so that you like it.