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| for (int i = 1; i <= 3; i++){ | ||
| System.out.println("- Введите название машины №" + i); | ||
| String name; | ||
| while (true){ |
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Не рекомендую писать бесконечные циклы через while (true) - лучше всегда явно прописывать условие выхода из цикла, чтобы уменьшить вероятность ошибиться и повысить читабельность кода
| String name; | ||
| while (true){ | ||
| name = scanner.nextLine(); | ||
| if (!name.trim().isEmpty()){ |
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Код для считывания непустой строки с ввода лучше вынести в отдельную функцию - код, разделённый на небольшие функции, легче читать, поддерживать и переиспользовать
| while (true){ | ||
| if(scanner.hasNextInt()){ | ||
| speed = scanner.nextInt(); | ||
| if(speed > 0 && speed <= 250){ |
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Минимальную и максимальную скорости лучше вынести в константы для повышения читабельности кода
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| class Car{ | ||
| int speed = 0; | ||
| String name; |
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Поля лучше пометить final, тем самым исключив возможность их модификации извне
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