What is the purpose of the Display class in SWT and how does it work?

The Display class in SWT is a crucial component for creating and managing the user interface in Java applications. It represents the connection between the application and the underlying windowing system. The main purpose of the Display class is to manage the user interface event loop, handle user input, and provide a way to interact with the graphical user interface.

It works by creating an instance of the Display class, which acts as the main entry point for interacting with the user interface components. The Display class creates the main graphical user interface thread, known as the event dispatch thread, where all user interface events are processed and handled.

When the Display class is instantiated, it creates the main application window and initializes the necessary resources for handling user interface events. It also provides methods to create and manage user interface widgets such as buttons, text fields, and labels.

Overall, the Display class in SWT plays a vital role in facilitating the interaction between the application and the user interface elements, allowing for the creation of interactive and responsive Java applications with rich graphical user interfaces.