ThakurPriyanka

DeleteListValue deleteList = DeleteListValue.builder().uid(uid)
             .hobbies("Drawing").build();

    if (daoOperation.deleteNode(deleteList)) {
       ]System.out.println("Update Transaction completed");
    ]}

ThakurPriyanka

//Helper Class for read and write operations for a file.

class FileStore {

    private File storeFolder;

    // Locks is used so that only one thread can update the file at a
    // time.
    private ReadWriteLock lock = new ReentrantReadWriteLock();

ThakurPriyanka

// Example of the executor service
class UserRepository implements Closeable {

    private FileStore fileStore;
    private ConcurrentHashMap<UUID, User> cache = new ConcurrentHashMap<>();
    private ReadWriteLock lock = new ReentrantReadWriteLock();
    private ExecutorService executors = Executors.newFixedThreadPool(2);
 
    UserRepository(FileStore fnileStore) {
        this.fileStore = fileStore;