Java tutorial
public class Main { public static void main(String[] args) { double x = 123456.7; double y = -123.45; // print the next number for x towards y System.out.println("Math.nextAfter(" + x + "," + y + ")=" + Math.nextAfter(x, y)); // print the next number for y towards x System.out.println("Math.nextAfter(" + y + "," + x + ")=" + Math.nextAfter(y, x)); } }