Swing II - Java - page 980

Display 18.8 A Text Area with Scroll Bars (part 1 of 3)

1 import javax.swing.JFrame;

2 import javax.swing.JTextArea;

3 import javax.swing.JPanel;

4 import javax.swing.JLabel;

5 import javax.swing.JButton;

6 import javax.swing.JScrollPane;

7 import java.awt.BorderLayout;

8 import java.awt.FlowLayout;

9 import java.awt.Color;

10 import java.awt.event.ActionListener;

11 import java.awt.event.ActionEvent;

12 public class ScrollBarDemo extends JFrame

13 implements ActionListener

14 {

15 public static final int WIDTH = 600;

16 public static final int HEIGHT = 400;

17 public static final int LINES = 15;

18 public static final int CHAR_PER_LINE = 30;

19 private JTextArea memoDisplay;

20 private String memo1;

21 private String memo2;

22 public static void main(String[] args)

23 {

24 ScrollBarDemo gui = new ScrollBarDemo();

25 gui.setVisible( true );

26 }

27 public ScrollBarDemo()

28 {

29 super ("Scroll Bars Demo");

30 setSize(WIDTH, HEIGHT);

31 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);