Абстрактный класс может содержать
🔹 Наследование: класс может наследоваться
🔹 Модификаторы: методы интерфейса по умолчанию
🔹 Поля: интерфейс содержит только
🔹 Когда использовать
Абстрактный класс —
Интерфейс —
BY Библиотека собеса по Java | вопросы с собеседований
Secret Chats are one of the service’s additional security features; it allows messages to be sent with client-to-client encryption. This setup means that, unlike regular messages, these secret messages can only be accessed from the device’s that initiated and accepted the chat. Additionally, Telegram notes that secret chats leave no trace on the company’s services and offer a self-destruct timer.
To pay the bills, Mr. Durov is issuing investors $1 billion to $1.5 billion of company debt, with the promise of discounted equity if the company eventually goes public, the people briefed on the plans said. He has also announced plans to start selling ads in public Telegram channels as soon as later this year, as well as offering other premium services for businesses and users.
Библиотека собеса по Java | вопросы с собеседований from es