java.lang.Float.isNaN(float v)

package com.codingdict;



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));

   }

}