Why does a null pointer to a class can access static functions?

Question

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What happens when a static method is invoked using a null object reference?

I'm curious as to how - and why - this behavior is implemented:

If I hold a null pointer to a class that has a static function, {nullPointer}.doSomething() will still work! for example, running the following example will not result in a null pointer exception!

How come is this even possible?

Class A { 
   int a; 
   static void doSomething() {...}
}

Class B {
   void test() {
     A a = null;
     //This will not throw an exception!
     a.doSomething();   

   }
}