could someone explain, please?

Question

What is the output of the following code?
int f=1, i=2;
while(++i<5)
f*=i;
System.out.println(f);

Answer 1

while (3<5) // true
f=f*i=1*3=3 // f is 3 now

while (4<5) // true
f=f*i=3*4=12 // f is 12 now

while(5<5) // false, the loop breaks
So final value of f is 12.

Answer 2

Add some manual tracing for the variables, it may help understanding what happens

int f = 1, i = 2;
System .out.println ("Before loop f = " + f + ", i = " + i);
while(++i < 5)
{
f *= i;
System .out.println ("* In loop f = " + f + ", i = " + i);
}
System.out.println("After loop f = " + f + ", i = " + i);