Display类 : 显示 « SWT « Java 教程

The primary functions of Display instances are as follows:

1. The Display object is the connection between the SWT and the underlying windowing system.
2. Implementing the SWT event loop in terms of a platform event model
3. Providing methods for accessing information about the operating system
4. Managing operating system resources used by SWT
5. Only a single Display instance is required in most SWT-based applications.
6. The thread that creates the Display object is the event-loop thread (user-interface thread).