Math.ceil and Math.floor returning same value

Question

I have a double (23.46)

And using the methods Math.ceil and Math.floor and parsing my double to these methods, I get the same value returned to me, which is 23...

Answer 1

When I run

System.out.println(Math.ceil(23.46));
System.out.println(Math.ceil(15.01));

I get

24.0
16.0

Isn't that what you want?