Main OOP Language Features

• Classes: Modularization, structure.
  
  
• Inheritance / extends: Hierarchy of modules, incremental development.
  
  
• Public / Protected / Private: Encapsulation.
  
  
• Interfaces / Abstract Classes: Composability.
  
  
• Polymorphism / virtual: Hierarchy of modules, incremental development.
  
  
• Templates: Type independent abstract data types.