Should shadowed static method follow overriden method rules ?

Following code gives compile error because the shadowed method throws exception which is superclass of the exception thrown in base class. If the static method is shadowed, and not overriden, why this gives compile error as describing it as overriding problem?

gives compile error as :
ExcepDemo.java:10: amethod() in ExcepDemo cannot override amethod() in Base; overridden method does not throw java.io.IOException
public static void amethod()throws IOException{}

First off, static methods are hidden not shadowed according to the JLS terminology.
Second, the same rules apply for overriding and hiding. Those rules are enumerated in JLS 8.4.6.3 Requirements in Overriding and Hiding:

If a method declaration overrides or hides the declaration of another method, then a compile-time error occurs if they have different return types or if one has a return type and the other is void. Moreover, a method declaration must not have a throws clause that conflicts (�8.4.4) with that of any method that it overrides or hides; otherwise, a compile-time error occurs.

Thanks Valentin. I got it.