private void btnSearchActionPerformed( java.awt.event.ActionEvent evt) { // GEN-FIRST:event_btnSearchActionPerformed String id = txtSearch.getText(); // Get the ID from the text field. if (id.isEmpty()) { productModel.updateItems(dao.getAll()); } else { productModel.updateItems( dao.getById(id)); // Update the model with the product that is retrieved from getById. } } // GEN-LAST:event_btnSearchActionPerformed