private void emailKeyTyped(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_emailKeyTyped
        char c = evt.getKeyChar();
        String s = c + "";

        if(s.matches("[\\\\\\\\!\\\"#$%&()*+,/:;<=>?\\\\[\\\\]^{|}~\\[\\]]")){
            evt.consume();
        }
    }