To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) many - This option is incorrect because the invade
method in the Alien
class has two overloaded versions: one that takes a short
parameter and one that takes a variable number of short
parameters. In this case, the invade
method is called with a single int
argument (7), so it does not match any of the available methods.
Option B) a few - This option is incorrect for the same reason as option A. The invade
method that takes a single short
parameter is not called, so this option is not the result.
Option C) Compilation fails. - This option is correct because there is no matching method in the Alien
class for the invade
method call with an int
argument. The compiler will give an error indicating that the method call is ambiguous because it matches both the method with a short
parameter and the method with a variable number of short
parameters.
Option D) An exception is thrown at runtime - This option is incorrect because the code fails to compile, so it will not even reach the runtime stage. Therefore, no exception will be thrown at runtime.
The correct answer is C. Compilation fails. This option is correct because the method call does not match any of the available methods in the Alien
class.