public void insertStubData() { for (Client client : _dao.clientGateway().getAll()) { Bill bill = new Bill(); bill.setClient(client); bill.setDescription("Test Quote "); bill.getProducts() .add(new BillProduct(new Product("Product 1", "Test", 10), bill.getID(), 9)); insert(bill); } Bill bill = new Bill(); bill.setType(TransactionType.Invoice); ArrayList<Client> clients = new ArrayList<Client>(_dao.clientGateway().getAll()); Client client = clients.get(0); bill.setClient(client); bill.setDescription("Test Invoice"); bill.getProducts().add(new BillProduct(new Product("Product 2", "Test 2", 8), bill.getID(), 8)); insert(bill); }