design-patterns-basics: What is design pattern and it´s advantage?

A design pattern is a well designed solution for solving the particular problem. One thing to be noticed i.e. design pattern represents a strategy, which is programming language independent, for solving the common object-oriented design problems. Design patterns make your code more flexible, reusable and maintainable.

Advantages of design pattern:
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Following are the key advantages of Design Patterns-

It provides the solutions that help to define the system architecture.
It represents the software engineering experiences.
It provides the transparency in the design of an application.