Double isNaN() method in Java

The java.lang.Double.isNan() method returns true if the specified number is a Not-a-Number (NaN) value, false otherwise.

Let’s say the following are our Double values.

Double val1 = new Double(3/0.);
Double val2 = new Double(0/0.);

Now, we will use the isNan() method to check whether the number is a NaN or not.

val1.isNaN();
val2.isNaN()

The following is our final example.

Example

 Live Demo

public class Demo {
   public static void main(String args[]) {
      Double val1 = new Double(3/0.);
      Double val2 = new Double(0/0.);
      System.out.println(val1.isNaN());
      System.out.println(val2.isNaN());
   }
}

Output

false
true

Karthikeya Boyini

Published on 11-Dec-2018 06:12:30

• Related Questions & Answers
• Java Float isNaN() Method
• Double isInfinite() method in Java
• isNAN() function in JavaScript
• Java Program to convert Double into String using toString() method of Double class
• Why is isNaN(null) == false in JS?
• Double brace initialization in Java
• Format double type in Java
• How to Convert Double to String to Double in Java?
• Convert double primitive type to a Double object in Java
• Java Double compare example
• Check for illegal number with isNaN() in JavaScript
• Explain about Double-declining balance method in accounting.
• Convert double to string in Java
• What is Double-buffering in Java?
• Convert Double to Integer in Java