public void insertIntoStaffTable(int user_id, Staff staff) { StringBuffer strQuery = new StringBuffer(INSERT_STAFF_QUERY); strQuery.append(user_id); strQuery.append("', '"); strQuery.append(staff.getStaff_ssn()); strQuery.append("', '"); strQuery.append(staff.getWork_desc()); strQuery.append("', '"); strQuery.append(staff.getPosition()); strQuery.append("', '"); strQuery.append(utility.convertStringToDate(staff.getHire_date())); strQuery.append("')"); System.out.println("Insert Staff query : " + strQuery.toString()); try { DBOperation.executeQuery(strQuery.toString()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }