AddressBook.java 文件源码

private void queryButtonActionPerformed(ActionEvent e)
{
   // query that returns all contacts
   TypedQuery<Addresses> findByLastname = 
      entityManager.createNamedQuery(
         "Addresses.findByLastname", Addresses.class);

   // configure parameter for query
   findByLastname.setParameter("lastname", queryTextField.getText());
   results = findByLastname.getResultList(); // get all addresses
   numberOfEntries = results.size();

   if (numberOfEntries != 0)
   {
      currentEntryIndex = 0;
      displayRecord();
      nextButton.setEnabled(true);
      previousButton.setEnabled(true);
   } 
   else
      browseButtonActionPerformed(e);
}