In the Math class , Math.ceil() will always return an integer value then why is the following code giving an error ?

Question

public class Program {
public static void main(String[] args) {
int c = Math.ceil(7.342);
System.out.println(c);
}
}
Output:
..\Playground\:4: error: incompatible types: possible lossy conversion from double to int
int c = Math.ceil(7.342);
^
1 error

Answer 1

Math.ceil(<some value>) returns a double, not an integer. If you would like to have the ceiling value be an integer, you can cast the expression:
int c = (int) (Math.ceil(7.342));
This casting truncates the .0 at the end of the ceiling value
Originally, it would have been 8.0; after casting it as an integer, the ceiling became 8
Hope that helps!

Answer 2

Math.ceil returns a double.