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class CustomException extends Exception { //Наследование
public CustomException(String message) {
super(message);
}
}
// Класс, в котором будут обработаны исключения
class ExceptionHandling { //Полиморфизм
// Метод, который генерирует исключение при делении на ноль
public int divide(int num1, int num2) throws ArithmeticException { //Инкапсуляция - скрывает
if (num2 == 0) {
throw new ArithmeticException("Деление на ноль недопустимо");
}
return num1 / num2;
}
// Метод, генерирующий и обрабатывающий собственное исключение
public void process(int value) throws CustomException { //Инкапсуляция
try {
if (value < 0) {
throw new CustomException("Значение не может быть отрицательным");
} else {
System.out.println("Значение: " + value);
}
} catch (CustomException e) {
System.out.println("Собственное исключение: " + e.getMessage());
}
}
}
// Главный класс программы
public class Main2 {
public static void main(String[] args) {
ExceptionHandling exceptionHandling = new ExceptionHandling();
// Обработка исключения при делении на ноль с помощью throws
try {
int result = exceptionHandling.divide(10, 0); //Вызывает метод divide объекта exceptionHandling для деления 10 на 0.
System.out.println("Результат деления: " + result);
} catch (ArithmeticException e) { //Блок, который перехватывает и обрабатывает исключение, возникающее при делении на ноль.
System.out.println("Ошибка: " + e.getMessage());
}
// Обработка собственного исключения
try {
exceptionHandling.process(-5); //Вызывает метод с отрицательным значением для обработки
} catch (CustomException e) {
System.out.println("Ошибка: " + e.getMessage());
}
}
}
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