❓ Для чего нужен enum в Java?Enum используется для задания фиксированного набора констант. Он помогает заменить "магические строки" или числа

Библиотека собеса по Java | вопросы с собеседований

❓ Для чего нужен enum в Java?

Enum используется для задания фиксированного набора констант. Он помогает заменить "магические строки" или числа, делая код более читаемым, безопасным и устойчивым к ошибкам.

Enum — это полноценный класс, он может содержать поля, методы и реализовывать интерфейсы. Используется, когда набор значений ограничен и заранее известен (например, дни недели, статусы заказа и т.п.).

Преимущества:

— Типобезопасность (нельзя присвоить значение вне набора)
— Удобство в switch-выражениях
— Возможность добавлять поведение (методы)

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Create: 2025-05-26
Last Update: 2025-06-11 10:52:08

Библиотека собеса по Java | вопросы с собеседований Telegram | DID YOU KNOW?

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