[1] http://www.energystar.gov/ia/home_improvement/HPwES_Utility_Intro_FactSheet.pdf. [2] http://www.homestarcoalition.org/about.html. [3] http://www.mckinsey.com/clientservice/electricpowernaturalgas/US_energy_efficiency/. There are no classes in ALL, ALL for WAP.
The biggest/largest integer that can be stored in a double without losing precision is the same as the largest possible value of a double. That is, DBL_MAX or approximately 1.8 Ã 10 308 (if your double is an IEEE 754 64-bit double). It's an integer. It's represented exactly.
In java, method overloading is not possible by changing the return type of the method because there may occur ambiguity. Let's see how ambiguity may occur: because there was problem: int result=obj.sum(20,20); //Here how can java determine which sum() method should be called.