Master/Reference Architectures and Patterns/hjp5/examples/Listing3714.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

/* Listing3714.java */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Listing3714
extends JFrame
implements ActionListener
{
  private JProgressBar pb;
  private int          value = 0;

  public Listing3714()
  {
    super("JProgressBar");
    addWindowListener(new WindowClosingAdapter(true));
    Container cp = getContentPane();
    //Fortschrittsanzeige
    pb = new JProgressBar(JProgressBar.HORIZONTAL, 0, 100);
    pb.setStringPainted(true);
    cp.add(pb, BorderLayout.NORTH);
    //Weiter-Button
    JButton button = new JButton("Weiter");
    button.addActionListener(this);
    cp.add(button, BorderLayout.SOUTH);
  }

  public void actionPerformed(ActionEvent event)
  {
    value = (value >= 100 ? 0 : value + 5);
    pb.setValue(value);
  }

  public static void main(String[] args)
  {
    Listing3714 frame = new Listing3714();
    frame.setLocation(100, 100);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}