Mastering Java: The Ultimate Quiz for 'Thinking in Java'

What is a key feature of event-driven programming in Swing?

1. Separation of interface from implementation

2. Combining code and graphics in one class

3. Using single-threaded event dispatching

4. Manual event handling

The correct answer is: Separation of interface from implementation

In event-driven programming in Swing, the interface is separated from the implementation. This means that the code for creating the user interface is separated from the code for functionality, making it easier to manage and update the program. Option B is incorrect because combining code and graphics in one class is a feature of using the AWT library, not Swing. Option C is incorrect because Swing uses multi-threaded event dispatching which allows for faster and more efficient processing of events. Option D is incorrect because Swing uses automatic event handling, where events are triggered and handled automatically without needing manual intervention from the programmer.