Java.lang.Float.isNaN(float v) Method

Description

The java.lang.Float.isNaN(float v) method returns true if the specified number is a Not-a-Number (NaN) value, else false.The argument v is the value to be tested.

Declaration

Following is the declaration for java.lang.Float.isNaN() method

public static boolean isNaN(float v)

Parameters

v − This is the value to be tested.

Return Value

This method returns true if the argument is NaN, else false.

Exception

NA

Example

The following example shows the usage of java.lang.Float.isNaN() method.

package com.tutorialspoint;

import java.lang.*;

public class FloatDemo {

   public static void main(String[] args) {

      Float f1 = new Float(-1.0/0.0);
      Float f2 = new Float(0.0/0.0);
  
      // returns true if this Float value is a Not-a-Number(NaN), else false 
      System.out.println(f1 + " = " + f1.isNaN(f1));
  
      System.out.println(f2 + " = " + f2.isNaN(f2));
   }
}   

Let us compile and run the above program, this will produce the following result −

-Infinity = false
NaN = true