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.
Is it a good practise to cache the object which is created using a factory? For example i create a Customer DAO using the DAO factory then after creating it i store it in a hashmap in the factory and then when a different request comes instead of creating the CustomerDAO again i serve the same from the hashmap.