public Client findById(long id) {
for (Client client : clients) {
if (client.getId_client() == id) {
return client;
}
}
return null;
}
public void deleteClientById(long id) {
for (Iterator<Client> iterator = clients.iterator(); iterator.hasNext(); ) {
Client client = iterator.next();
if (client.getId_client() == id) {
iterator.remove();
}
}
}