SCJP - 31 -Given Example

What is the result?
A. true true
B. false true
C. true false
D. false false
E. Compilation fails.
F. An exception is thrown at runtime.

Answer:

A is correct. The references f1, z, and f3 all refer to the same instance of Fizz. The final
modifier assures that a reference variable cannot be referred to a different object, but final
doesn’t keep the object’s state from changing.

B, C, D, E, and F are incorrect based on the above. (Objective 7.3)
==

class Fizz {
int x = 5;
public static void main(String[] args) {
final Fizz f1 = new Fizz();
Fizz f2 = new Fizz();
Fizz f3 = FizzSwitch(f1,f2);
System.out.println((f1 == f3) + " " + (f1.x == f3.x));
}
static Fizz FizzSwitch(Fizz x, Fizz y) {
final Fizz z = x;
z.x = 6;
return z;
} }