In software engineering, the Extract Class refactoring is applied when a class becomes overweight with too many methods and its purpose becomes unclear. Extract Class refactoring involves creating a new class and moving methods and/or data to the new class.
. Martin Fowler (software engineer) . 1999 . Refactoring. Improving the Design of Existing Code . Addison-Wesley . 0-201-48567-2 . registration .