I have a question about function argument.

Question

What's the difference between funcA and funcB ?

void funcA(int a){
System.out.print(a);
}

void funcB(int b){
int input = b;
System.out.print(input);
}

Do I need to declare a new variable for argument ? Or I just can use the argument directly ?
Which is better ?

Answer 1

@Kuanlin Chen, yes, I believe it is for the sake of efficiency. You can of course create variables in a function if it is necessary, but in the case on your sample code it was not necessary.

Answer 2

Is it because of efficiency ?