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/* Java Double isNaN method example This example shows how to use isNaN() method of the Double class. */ public class JavaDoubleIsNaNExample { public static void main(String[] args) { /* boolean isNaN(double f) static method checks whether the agrument primitive double value is Not-a-Number value or not. It return true if the specified argument is Not-a-Number value, false otherwise. */ double d = Math.sqrt(-10); boolean b1 = Double.isNaN(d); System.out.println(b1); /* boolean isNaN() instance method checks whether the Double object is Not-a-Number value or not. It return true if the object is Not-a-Number value, false otherwise. */ Double dObj = new Double(d); boolean b2 = dObj.isNaN(); System.out.println(b2); } } /* Output would be true true */ |
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