How does the Object Oriented approach improve software development?

The key benefits are:
􀂃 Re-use of previous work: using implementation inheritance and object composition.
􀂃 Real mapping to the problem domain: Objects map to real world and represent vehicles, customers,
products etc: with encapsulation.
􀂃 Modular Architecture: Objects, systems, frameworks etc are the building blocks of larger systems.


The increased quality and reduced development time are the by-products of the key benefits discussed above.
If 90% of the new application consists of proven existing components then only the remaining 10% of the code have to be tested from scratch.