# 
## Overview

The **`isFinite()` method** of the `Double` class returns `true` if the argument is a finite floating-point value, and returns `false` otherwise (for `NaN` and `infinity` arguments).


# 
#  Method signature

```Java
public static boolean isFinite(double d)
```
##
## Parameters
* double `d`: the value to be tested.

# 
## Example

In the example below, we define two double values. One is an exponential number, and the other is the result of division by zero. The two double values are tested by the `Double.isFinite()` method.


import java.lang.Double;

public class Main {

    public static void main(String args[])
    {
        Double d1 = 2E23;
        Double d2 = d1/0;

        System.out.println(d1 + " - " + Double.isFinite(d1));
        System.out.println(d2 + " - " + Double.isFinite(d2));
    }
}

What is Double.isFinite() in Java?

Determines if a double is finite. Returns true for finite values, false for NaN/infinity.