code for Math.nextUp in java

public class FloastPointDemo {
public static void main(String[] args) {
// Returns the greater adjacent of a double
double greaterAdjacent = Math.nextUp(123.0);
System.out.println("Math.nextUp (123.0) = " + greaterAdjacent);
}
}

// Math.nextUp (123.0) = 123.00000000000001