Object Oriented Programming Through Java by Pearson

Exploring the Swing Components 10.5

Example 10.2: Program to demonstrate JFrame class

1. import javax.swing.*;

2. public class SwingDemo {

3. public static void main(String[] args) {

4. JFrame frame = new DisplayFrame();

5. frame.setVisible(true);

6. }

7. }

8. class DisplayFrame extends JFrame{

9. DisplayFrame(){

10. setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

11. setTitle(“Swing Demo”);

12. setSize(300, 150);

13. setLocation(100,100);

14. }

15. }

The JFrame class is present in javax.swing.JFrame. To use this class, we use the

import statement import javax.swing.* as shown in line 1. In line 4, we instantiate the

DisplayFrame ...