Next value « Math « Development

Return	Method	Summary
static double	nextAfter(double start, double direction)	Returns the floating-point number adjacent to the first argument in the direction of the second argument.
static float	nextAfter(float start, double direction)	Returns the floating-point number adjacent to the first argument in the direction of the second argument.
static double	nextUp(double d)	Returns the floating-point value adjacent to d in the direction of positive infinity.
static float	nextUp(float f)	Returns the floating-point value adjacent to f in the direction of positive infinity.


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

    System.out.println(Math.nextAfter(2,1.2));
    System.out.println(Math.nextUp(1.2));
  }
}


1.9999999
1.2000000000000002