Библиотека собеса по Java | вопросы с собеседований

❓ Что такое паттерны проектирования?

Паттерны проектирования — это проверенные временем шаблоны решений типовых задач в проектировании софта. Они помогают писать гибкий, расширяемый и поддерживаемый код.

Существует три группы паттернов:

— Порождающие (как создавать объекты): Singleton, Factory Method, Builder.
— Структурные (как устроить отношения между объектами): Adapter, Decorator, Composite.
— Поведенческие (как объекты взаимодействуют): Observer, Strategy, Command.

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Библиотека собеса по Java

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Create: 2025-04-26
Last Update: 2025-05-20 19:15:42

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The lead from Wall Street offers little clarity as the major averages opened lower on Friday and then bounced back and forth across the unchanged line, finally finishing mixed and little changed.The Dow added 33.18 points or 0.10 percent to finish at 34,798.00, while the NASDAQ eased 4.54 points or 0.03 percent to close at 15,047.70 and the S&P 500 rose 6.50 points or 0.15 percent to end at 4,455.48. For the week, the Dow rose 0.6 percent, the NASDAQ added 0.1 percent and the S&P gained 0.5 percent.The lackluster performance on Wall Street came on uncertainty about the outlook for the markets following recent volatility.