What is class design in Java?

Class is a very basic unit of object-oriented programming . It is the primary build structure from which the instances of it, called the object, are extracted. The principles of class design, however preliminary it may seem, are decisive of the foundation of an application.14 Ara 2016

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Can we design in Java?

That means, a design pattern represents an idea, not a particular implementation. By using the design patterns you can make your code more flexible, reusable and maintainable. It is the most important part because java internally follows design patterns .

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