class Calculator {
    public int divide(int a, int b) {
        return a / b; // may throw ArithmeticException
    }
    public int convert(String s) {
        return Integer.parseInt(s); // may throw NumberFormatException
    }
}
 
public class ComplexExceptionDemo {
    public static void main(String[] args) {
        System.out.println("=== Program Start ===");
        Calculator calc = new Calculator();
        try {
            System.out.println("Inside try block...");
 
            int num1 = calc.convert("10");     // valid → 10
            int result1 = calc.divide(100, num1); // 100/10 = 10
            System.out.println("Result1: " + result1);
 
            int num2 = calc.convert("0");     // valid → 0
            int result2 = calc.divide(100, num2); // 100/0 → ArithmeticException
            System.out.println("Result2: " + result2);
 
            int num3 = calc.convert("abc");   // won’t execute
            int result3 = calc.divide(50, num3);
            System.out.println("Result3: " + result3);
 
        } catch (ArithmeticException e) {
            System.out.println("Caught ArithmeticException: " + e);
        } catch (NumberFormatException e) {
            System.out.println("Caught NumberFormatException: " + e);
        } finally {
            System.out.println("Finally block always runs.");
        }
        System.out.println("=== Program End ===");
    }
}

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