Using Math.floor

When I use Math.floor I get an integer part of a double rigth?
For exemple >> If I have
double num = 34.54
Math.floor(num) will return 34 rigth?
But this 34 is a double 34.0 or is an integer 34?
If not an integer, how can I do to get the integer part "34" like a integer number 34 and not like a double 34.0?

Yes I already did it but it is not working
Here is the code
private void confirm(Double list[]){
        int nParcelas = (int)(list[2]);.....
I call the function confirm from another class, and I pass a list like parameter.
I have the same fuction but is a list of String and work ok. I get the numbers of this list and make some operations and averything works find...
But I want to get an item of this list and get its integer part, and it it's not working....

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