The MVC is one of the most widely used architecture patterns for application and web development. MVC stands for Model View Controller:
- Model: Contains the data
- View: Contains the presentation logic
- Controller: Contains the backend code
To complete this week’s lab, use any of the following frameworks:
- Spring
- Grails
- Vaadin
- Play
- Struts
- Java Server Faces
Last year, when I was in your place, I found that creating an entire application, along with a GUI using a Java web-app framework (such as Spring Boot) was a pretty daunting task–especially to complete within a single lab session.
To make things easier for you, I have created template code using Vaadin with all the required classes and methods, you only need to fill them in. Use this guide to set up Vaadin on your system.
From here, download code.zip and extract it into any directory. You will find the main MVC files in mvc\src\main\java\com\example\application\views\main. Once you have filled in all the methods, CD into the mvc folder, and run mvnw on Windows, or ./mvnw on Unix to run the project. You can also use the quick start project in the guide page to get started.
In case you decide to use Vaadin, look into the following components:
Create an employee directory by storing each employee’s name using a HashMap, where the key is their ID and value is their name. Create another HashMap that determines the employees who are under a specific employee. Here, the key will be an employee ID, and the value will be a List of reporting employee IDs.
In the UI, have methods to display all employees, add an employee, get an employee’s subordinates’ names, and add a subordinate to an employee.