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23 
24 /* @test
25  * @bug 6940863
26  * @summary Textarea within scrollpane shows vertical scrollbar
27  * @author Pavel Porvatov
28  * @run main bug6940863
29  */
30 
31 import sun.awt.OSInfo;
32 
33 import javax.swing.*;
34 import java.awt.*;
35 import java.awt.event.ActionEvent;
36 import java.awt.event.ActionListener;
37 
38 public class bug6940863 {
39     private static JFrame frame;
40 
41     private static JScrollPane scrollPane;
42 
43     private static final Timer timer = new Timer(1000, new ActionListener() {
44         public void actionPerformed(ActionEvent e) {
45             boolean failed = scrollPane.getVerticalScrollBar().isShowing() ||
46                     scrollPane.getHorizontalScrollBar().isShowing();
47 
48             frame.dispose();
49 
50             if (failed) {
51                 throw new RuntimeException("The test failed");
52             }
53         }
54     });
55 
main(String[] args)56     public static void main(String[] args) throws Exception {
57         if (OSInfo.getOSType() != OSInfo.OSType.WINDOWS) {
58             System.out.println("The test is suitable only for Windows OS. Skipped");
59             return;
60         }
61 
62         UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
63 
64         SwingUtilities.invokeAndWait(new Runnable() {
65             public void run() {
66                 JTextArea textArea = new JTextArea();
67 
68                 textArea.setLineWrap(true);
69                 textArea.setWrapStyleWord(true);
70 
71                 scrollPane = new JScrollPane(textArea);
72 
73                 scrollPane.setMinimumSize(new Dimension(200, 100));
74                 scrollPane.setPreferredSize(new Dimension(300, 150));
75 
76                 frame = new JFrame("Vertical scrollbar shown without text");
77 
78                 frame.setContentPane(scrollPane);
79                 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
80                 frame.pack();
81                 frame.setVisible(true);
82 
83                 timer.setRepeats(false);
84                 timer.start();
85             }
86         });
87     }
88 }
89