To answer this question, let's go through each option:
Option A) true false - This option is incorrect. Let's analyze the code to understand why.
In the given code, we have two instances of the Fizz
class, f1
and f2
. The FizzSwitch
method takes two Fizz
objects as parameters, x
and y
. In the FizzSwitch
method, the value of x
is assigned to z
, and then the value of x.x
is changed to 6. Finally, z
is returned.
In the main
method, f1
is passed as the first parameter and f2
is passed as the second parameter to the FizzSwitch
method. The returned value from the FizzSwitch
method is assigned to f3
.
Since z
is assigned the value of x
in the FizzSwitch
method, and x
is a reference to f1
, z
and f3
both reference the same object. Therefore, (f1 == f3)
will evaluate to true.
Also, the value of x
in f1
is changed to 6 in the FizzSwitch
method. Therefore, (f1.x == f3.x)
will also evaluate to true.
Option B) true true - This option is correct. As explained above, (f1 == f3)
and (f1.x == f3.x)
will both evaluate to true.
Option C) false true - This option is incorrect. As explained above, (f1 == f3)
will evaluate to true.
Option D) false false - This option is incorrect. As explained above, (f1 == f3)
will evaluate to true.
The correct answer is B) true true.