Hi all, what does it mean? Please someone explain it for me

Question

null = ??? please explain
?0 what does it mean

@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}

Answer 1

it is an operator
(x>6)?say("x is greater than 6"):say("x is smaller than print")

(if conditionn then)?(things here true):(codes)

if(){
}
else{
}