Java.lang.Float.isNaN() Method


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Description

The java.lang.Float.isNaN() method returns true if this Float value is a Not-a-Number (NaN), else false.

Declaration

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

public boolean isNaN()

Parameters

NA

Return Value

This method returns true if the value represented by this object 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());
  
      System.out.println(f2 + " = " + f2.isNaN());
   }
}   

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

-Infinity = false
NaN = true

java_lang_float.htm

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