private void customerClearButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_customerClearButtonActionPerformed
        usernameTxt.setText("");
        passwordTxt.setText("");
        emailTxt.setText("");
        firstNameTxt.setText("");
        lastNameTxt.setText("");
        birthdayMonth.setSelectedIndex(0);
        birthdayDay.setSelectedIndex(0);
        birthdayYear.setSelectedIndex(0);  
        cityTxt.setText("");
        stateTxt.setSelectedIndex(0);
        zipcodeTxt.setText("");
        addressTxt.setText("");
        creditCardNumTxt.setText("");
        creditCardExpireDateTxt1.setText("");
    }