Define an exception class called NegativeNumberException.

The class should have a constructor
with no parameters. If an exception is thrown with this zero-argument constructor, getMessage
should return “Negative Number Not Allowed!” The class should also have a constructor with a
single parameter of type String. If an exception is thrown with this constructor, then getMessage
returns the value that was used as an argument to the constructor.

```
public class NegativeNumberException extends Exception
{
public NegativeNumberException()
{
super("Negative Number Detected!");
}

public NegativeNumberException(String message)
{
super(message);
}
}

```