Struts Framework

Question 1

Explain MVC

Answer 1

Model View Controller. Software architectural pattern for implementing user interfaces on computers. It divides a given software application into three interconnected parts, so as to separate internal representations of information from the ways that information is presented to or accepted from the user.

Question 2

What was MVC traditionally used for?

Answer 2

GUIs

Question 3

What is the central component of MVC?

Answer 3

Model

Question 4

What’s model?

Answer 4

The model directly manages the data, logic and rules of the application.

Question 5

What’s view?

Answer 5

A view can be any output representation of information, such as a chart or a diagram. Multiple views of the same information are possible, such as a bar chart for management and a tabular view for accountants.

Question 6

What’s controller?

Answer 6

Accepts input and converts it to commands for the model or view.

Question 7

Describe interactions between parts in MVC

Answer 7

1) A model stores data that is retrieved according to commands from the controller and displayed in the view.
2) A view generates new output to the user based on changes in the model.
3) A controller can send commands to the model to update the model’s state (e.g. editing a document). It can also send commands to its associated view to change the view’s presentation of the model (e.g. by scrolling through a document).