Ответ:
- Абстрактный метод – метод без реализации, который должен быть переопределен в наследнике.
- Интерфейс – чистая абстракция (до Java 8), содержит только абстрактные методы (начиная с Java 8, допускает default и static методы).
tags: #собеседование
BY JavaRocks
Telegram has made it easier for its users to communicate, as it has introduced a feature that allows more than 200,000 users in a group chat. However, if the users in a group chat move past 200,000, it changes into "Broadcast Group", but the feature comes with a restriction. Groups with close to 200k members can be converted to a Broadcast Group that allows unlimited members. Only admins can post in Broadcast Groups, but everyone can read along and participate in group Voice Chats," Telegram added.
JavaRocks from it