Java Float - isNaN() Method
The java.lang.Float.isNaN() method is used to check whether this Float value is a Not-a-Number (NaN) or not. The method returns true if this Float value is a Not-a-Number (NaN), false otherwise.
Syntax
public boolean isNaN()
Parameters
No parameter is required.
Return Value
Returns true if the value represented by this object is NaN; false otherwise.
Exception
NA.
Example:
In the example below, the java.lang.Float.isNaN() method is used to check whether the given Float value is NaN or not.
import java.lang.*; public class MyClass { public static void main(String[] args) { //creating Float value Float x = 5.2f; Float y = 0.0f/0.0f; Float z = Float.NaN; //checking Float values for NaN System.out.println("Is x NaN?: " + x.isNaN()); System.out.println("Is y NaN?: " + y.isNaN()); System.out.println("Is z NaN?: " + z.isNaN()); } }
The output of the above code will be:
Is x NaN?: false Is y NaN?: true Is z NaN?: true
❮ Java.lang - Float