17.5.1. Java Swing Example

Try these first

1. 1.

   What does a JButton do in a Java Swing application?

   Hint

   Think about how buttons are used in everyday applications.

2. 2.

   What is the purpose of the ActionListener in this example?

   Hint

   Consider what actions should occur in response to user inputs.

3. 3.

   What is the purpose of a JButton in Java Swing?

   • To display text
   • To handle events
   • To receive user clicks

   Hint

   Think about what you do when you see a button on a screen.

4. 4.

   True or False: ActionListener is used to create buttons in Java Swing.

   • True
   • False

   Hint

   Consider the role of each component.

5. 5.

   Design a simple Java Swing application with multiple buttons, each performing different actions when clicked.

   Hint

   Think about how you could replicate the code structure for multiple buttons.

6. 6.

   Implement error handling for user input in a GUI application. How would you modify the JButton's action to validate input before executing?

   Hint

   Consider using JOptionPane for displaying error messages.