Ceilling and flooring value

static double ceil(double a)

Returns the smallest double value that is greater than or equal to a and is equal to an integer.

static double floor(double a)

Returns the largest double value that is less than or equal to the argument and is equal to an integer.

public class Main {
  public static void main(String[] args) {

    System.out.println(Math.ceil(2.2));
    System.out.println(Math.floor(2.7));
    
  }
}

The output:

3.0
2.0

1. Math class
2. Constant E and PI
3. Get the absolute value
4. sin, cos, tan: Trigonometric functions
5. Cube root and square root
6. Ceilling and flooring value
7. Copy sign
8. Raise the power
9. Get exponent
10. sqrt(x2 +y2)
11. IEEE remainder
12. logarithm
13. Max, min value
14. Next value
15. Math Random
16. Round to int to double
17. Round a value to integer
18. value * 2^ scaleFactor
19. Get the sign
20. Degree to Radian, and Radian to Degree
21. Returns the size of an ulp of the argument