Object-oriented programming allows procedures about objects to be created whose exact type is not known until runtime. For example, a screen cursor may change its shape from an arrow to a line ...

Encapsulation shows the power of abstraction by extension. Modular interfaces are a very effective example of encapsulation to provide abstraction in high-level design and the corresponding ...

Proponents of object-oriented techniques point to the flexibility and extensibility of object-oriented systems along with other benefits such as increased modularity, abstraction, and encapsulation.