GIT- Switched to a new local branch by using a remote branch

Here I want to share simple way of creating a git local branch by using a remote branch, this often happens when you already created a feature branch in a remote area but you need to checkout or switch to that particular branch in your local git environment here are the syntax and steps

Delegation vs Composition vs Aggregation

Delegation vs Composition vs Aggregation

Dependency Inversion Principle vs Programming to Interface

Dependency Inversion Principle vs Programming to Interface

Principles of design patterns in Object Oriented Anaysis and Design

Principles of design patterns in Object Oriented Anaysis and Design

Architectural Pattern: MVC

The MVC (Model-View-Controller)  architecture has its roots in the Smalltalk programming language, where it was originally applied to map the traditional input, processing, and output tasks to the graphical user interaction model. The following diagram shows the MVC architecture.

 The MVC consist of three parts:

·  Model: Model is the core of the application which maintains the state and data that the application represents. It knows nothing about the views representing this model.

·  View: The view renders the contents of a model. It specifies how the model should be presented. It is the view's responsibility to maintain consistency in its presentation when the model changes.  There may be several views representing the same model.

·  Controller: The controller translates user interactions with the view into actions to be performed by the model. In a stand-alone GUI client, user interactions could be button clicks or menu selections, whereas in a Web application, they appear as GET and POST HTTP requests. Based on the user interactions and the outcome of the model actions, the controller responds by selecting an appropriate view.

Let's discuss how this architecture is implemented in popular java web frameworks.