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23 
24 /**
25  * @test
26  * @key headful
27  * @bug 6940863
28  * @summary Textarea within scrollpane shows vertical scrollbar
29  * @author Pavel Porvatov
30  * @requires (os.family == "windows")
31  * @library /test/lib
32  * @build jdk.test.lib.Platform
33  * @run main bug6940863
34  */
35 
36 import jdk.test.lib.Platform;
37 
38 import javax.swing.*;
39 import java.awt.*;
40 import java.awt.event.ActionEvent;
41 import java.awt.event.ActionListener;
42 
43 public class bug6940863 {
44     private static JFrame frame;
45 
46     private static JScrollPane scrollPane;
47 
48     private static final Timer timer = new Timer(1000, new ActionListener() {
49         public void actionPerformed(ActionEvent e) {
50             boolean failed = scrollPane.getVerticalScrollBar().isShowing() ||
51                     scrollPane.getHorizontalScrollBar().isShowing();
52 
53             frame.dispose();
54 
55             if (failed) {
56                 throw new RuntimeException("The test failed");
57             }
58         }
59     });
60 
main(String[] args)61     public static void main(String[] args) throws Exception {
62         if (!Platform.isWindows()) {
63             System.out.println("The test is suitable only for Windows OS. Skipped");
64             return;
65         }
66 
67         UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
68 
69         SwingUtilities.invokeAndWait(new Runnable() {
70             public void run() {
71                 JTextArea textArea = new JTextArea();
72 
73                 textArea.setLineWrap(true);
74                 textArea.setWrapStyleWord(true);
75 
76                 scrollPane = new JScrollPane(textArea);
77 
78                 scrollPane.setMinimumSize(new Dimension(200, 100));
79                 scrollPane.setPreferredSize(new Dimension(300, 150));
80 
81                 frame = new JFrame("Vertical scrollbar shown without text");
82 
83                 frame.setContentPane(scrollPane);
84                 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
85                 frame.pack();
86                 frame.setVisible(true);
87 
88                 timer.setRepeats(false);
89                 timer.start();
90             }
91         });
92     }
93 }
94