How should I throw a divide by zero exception in Java without actually dividing by zero?

Question

I have an I2C device that wants two inputs: a denominator and a numerator. Both are written to separate addresses, so no actual calculation (numerator/denominator

Answer 1

public class ZeroDivisionException extends ArithmeticException {
    // ...
}

if (denominator == 0) {
    throw new ZeroDivisionException();
}