Java Reference
In-Depth Information
Display 19.3
The Runnable Interface (part 1 of 2)
1 import javax.swing.JFrame;
2 import javax.swing.JPanel;
3 import javax.swing.JButton;
4 import java.awt.BorderLayout;
5 import java.awt.FlowLayout;
6 import java.awt.Graphics;
7 import java.awt.event.ActionListener;
8 import java.awt.event.ActionEvent;
9 public class ThreadedFillDemo2 extends JFrame
10 implements ActionListener, Runnable
11 {
12 public static final int WIDTH = 300;
13 public static final int HEIGHT = 200;
14 public static final int FILL_WIDTH = 300;
15 public static final int FILL_HEIGHT = 100;
16 public static final int CIRCLE_SIZE = 10;
17 public static final int PAUSE = 100; // milliseconds
18 private JPanel box;
19 public static void main(String[] args)
20 {
21 ThreadedFillDemo2 gui = new ThreadedFillDemo2();
22 gui.setVisible( true );
23 }
24 public ThreadedFillDemo2()
25 {
26 setSize(WIDTH, HEIGHT);
27 setTitle("Threaded Fill Demo");
28 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
29 setLayout( new BorderLayout());
30 box = new JPanel();
31 add(box, "Center");
32 JPanel buttonPanel = new JPanel();
33 buttonPanel.setLayout( new FlowLayout());
34 JButton startButton = new JButton("Start");
35 startButton.addActionListener( this );
36 buttonPanel.add(startButton);
37 add(buttonPanel, "South");
38 }
(continued)
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