What does model mean in java

Model manages application data in the MVC pattern in Java, including: storing and updating data, and providing data to views. It can take the form of a JavaBean, Entity, or Business Object and interacts with Views and Controllers to provide data, receive input, and update the user interface.

Model in Java

In Java, "Model" is Model-View-Controller (MVC) One of the three core components in design patterns. Its responsibility is to represent the application's data and manage its state.

The role of Model

• Store and manage application data.
• Modify and update data as needed.
• Provide data to the view so that the view can be presented to the user.

Types of Model

Model in Java can take many forms, including:

• JavaBean: Simple Java object with getter and setter methods.
• Entity: An object containing data for a row in a table in the database.
• Business Object: Object that represents the business logic of the application.

Interaction between Model and View and Controller

Model interacts with View and Controller components as follows:

• Model provides data to View, View creates the user interface based on this data.
• Controller receives user input and updates the Model.
• When the Model updates, it notifies the View so that the View can update the user interface.

Example

A simple Java Model can represent a student's information:

public class Student {
    private String name;
    private int age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

This Model stores the student's name and age . The View can use data from this Model to display student information, and the Controller can update this Model to modify the student's information.

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