Throws statement is used at the end of method signature to indicate that an exception of a given type
may be thrown from the method.
The main purpose of throws keyword is to delegate responsibility of exception handling to the caller
methods, in the case of checked exception.
In the case of unchecked exceptions, it is not required to use throws keyword.
We can use throws keyword only for throwable types otherwise compile time error saying incompatible
types.
An error is unchecked , it is not required to handle by try catch or by throws.

Syntax :

Class Test{
Public static void main(String args[]) throws IE
{
}
}

Note : The method should throw only checked exceptions and subclasses of checked exceptions.
It is not recommended to specify exception superclasses in the throws class when the actual exceptions
thrown in the method are instances of their subclass