Java SE 8 Programmer II: Exam 1Z0-809 | Question Analysis

Invalid Denominator

Question

Given: public class Counter{ public static void main (String[ ] args) { int a = 10; int b = -1; assert (b >=1) : "Invalid Denominator"; int Ñ = a / b; System.out.println (c); } } What is the result of running the code with the ""ea option?

Answers

Explanations

Click on the arrows to vote for the correct answer

A. B. C. D.

C.

The code is attempting to divide variable a by variable b, which is assigned the value -1. Before performing the division, the code includes an assertion statement that checks if b >= 1. The assertion is intended to validate that b is not negative, as it would result in a divide-by-zero error.

If the assertion fails (i.e., b is less than 1), an AssertionError is thrown, which would result in option C being the correct answer. However, whether or not the assertion fails depends on the command-line option used to execute the code.

The option referred to in the question is the -ea option, which enables assertions. When this option is enabled, the code will check the assertion and throw an AssertionError if it fails. However, if the -ea option is not enabled, the assertion will be ignored, and the code will proceed with the division.

If we assume that the -ea option is enabled, the assertion assert (b >= 1) : "Invalid Denominator" will fail, as -1 is less than 1. As a result, an AssertionError will be thrown, and option C is the correct answer.

Note that if the assertion passes, the code will proceed with the division, which will result in a divide-by-zero error, as b is -1. However, this error will not be reached, as the AssertionError will be thrown first.

In summary, the correct answer is C, assuming the -ea option is enabled.