Factory Method pattern for document processing defines an abstract DocumentCreator base class with concrete PDFDocumentCreator and WordDocumentCreator subclasses that instantiate their respective PDFDocument and WordDocument implementations. Each document type implements the abstract Document interface with open, edit, save, and close methods, allowing polymorphic document handling. This pattern decouples document creation logic from client code, enabling easy addition of new document formats without modifying existing creator classes. Fork this diagram on Diagrams.so to customize for your specific document types, add new formats like ExcelDocument, or adapt the pattern to other factory scenarios. The Factory Method is ideal when a system must work with objects whose types are determined at runtime rather than compile time.