Java examples for Language Basics:float
how to use isNaN() method of the Float class.
public class Main { public static void main(String[] args) { // w w w.j av a 2 s . c o m /* It return true if the specified argument is Not-a-Number value, false otherwise. */ float f = (float) Math.sqrt(-10); boolean b1 = Float.isNaN(f); System.out.println(b1); /* boolean isNaN() instance method checks whether the Float object is Not-a-Number value or not. It return true if the object is Not-a-Number value, false otherwise. */ Float fObj = new Float(f); boolean b2 = fObj.isNaN(); System.out.println(b2); } }