1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.
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9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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22  */
23 
24 import java.awt.*;
25 import java.awt.image.BufferedImage;
26 
27 /*
28  * @test
29  * @summary Check that GraphicsDevice methods do not throw unexpected
30  *          exceptions in headless mode
31  * @run main/othervm -Djava.awt.headless=true HeadlessGraphicsDevice
32  */
33 
34 public class HeadlessGraphicsDevice {
main(String args[])35     public static void main(String args[]) {
36         GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
37         Graphics2D gd = ge.createGraphics(new BufferedImage(100, 100, BufferedImage.TYPE_4BYTE_ABGR));
38         GraphicsConfiguration gc = gd.getDeviceConfiguration();
39         GraphicsDevice gdev = gc.getDevice();
40 
41         for (GraphicsConfiguration gcl : gdev.getConfigurations())
42             gcl.toString();
43 
44         gdev.getDefaultConfiguration().toString();
45         gdev.getIDstring();
46 
47         if (gdev.getType() != GraphicsDevice.TYPE_IMAGE_BUFFER)
48             throw new RuntimeException("Created GraphicsDevice that should be IMAGE_BUFFER but it isn't");
49     }
50 }
51