I have a method with an Object o parameter.
In this method, I exactly know there is a String in "o" which is not null. There is no need to check, or do something else. I have to treat it exactly like a String object.
Just curious - what is cheaper - cast it to String, or use Object.toString()?
Or is it same by time-/cpu-/mem- price?
Update:
The method accepts Object because it's the implementation of an interface. There is no way to change the parameter type.
And it can't be null at all. I just wanted to say that I do not need to check it for null or emptyness. In my case, there is always a nonempty string.
