kubawieczorek

InputStream inputStream = null;
byte[] dataChunk = new byte[1024];

try {
  inputStream = new FileInputStream("test.txt");
  while (inputStream.read(dataChunk) != -1) {
      //Perform operations on data...
  }
} catch (IOException e) {
  e.printStackTrace();

kubawieczorek

byte[] dataChunk = new byte[1024];
try (InputStream inputStream = new FileInputStream("test.txt")) {
    while (inputStream.read(dataChunk) != -1) {
        //Perform operations on data...
    }
} catch (IOException e) {
    e.printStackTrace();
}

kubawieczorek

String path = "tmp/documents";
String fileName = "test.txt";
File targetFile = new File(path, fileName);
InputStream inputStream = new FileInputStream(targetFile);

kubawieczorek

private String getStringFromStream(InputStream inputStream) throws IOException {
    StringBuilder textBuilder = new StringBuilder();
    try (Reader reader = new BufferedReader(new InputStreamReader(inputStream))) {
        int c = 0;
        while ((c = reader.read()) != -1) {
            textBuilder.append((char) c);
        }
    }
    return textBuilder.toString();
}

kubawieczorek

private String getStringFromStream(InputStream inputStream) throws IOException {
    try (final Reader reader = new InputStreamReader(inputStream)) {
        return CharStreams.toString(reader);
    }
}

kubawieczorek

private String getStringFromStream(InputStream inputStream) throws IOException {
    return IOUtils.toString(inputStream, StandardCharsets.UTF_8.name());
}

kubawieczorek

@Transactional
 public Client saveNewClient(ClientDto clientDto) {
     Client client = new Client();
     client.setName(clientDto.getName());
     client.setEmail(clientDto.getEmail());
     Client newClient = clientRepository.save(client);
     return newClient;
 }

kubawieczorek

@Transactional
public void updateClientsName(String oldName, String newName) {
    Client managedClient = clientRepository.findByName(oldName);
    managedClient.setName(newName);
}

kubawieczorek

@Service
public class ClientsService {

    private final ClientRepository clientRepository;

    @Autowired
    public ClientsService(ClientRepository clientRepository) {
        this.clientRepository = clientRepository;

    }

kubawieczorek

@Transactional
public void deleteClientWithName(String name) {
    Client managedClient = clientRepository.findByName(name);
    clientRepository.delete(managedClient);
}