This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
An abstract method can't be static because you can call any static method (even without having an object instance of the corresponding class). But you aren't allowed to call abstract methods because they don't have an implementation. Abstract methods are only method prototypes - a skeleton for methods.
For this reason it doesn't make sense to have a method which is both - static and abstract!