HangNonVolatileBuffer.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.lang.reflect.InvocationTargetException;

import javax.swing.JFrame;
import javax.swing.SwingUtilities;

/**
 * @test
 * @key headful
 * @bug 8029455
 * @summary Swing should not hang if non-volatile image is used as a backbuffer.
 * @run main/othervm -Dswing.volatileImageBufferEnabled=false HangNonVolatileBuffer
 */
public final class HangNonVolatileBuffer {

    private static JFrame f;

    public static void main(final String[] args)
            throws InvocationTargetException, InterruptedException {
        SwingUtilities.invokeAndWait(() -> {
            f = new JFrame("JFrame");
            f.setSize(300, 300);
            f.setLocationRelativeTo(null);
            f.setVisible(true);
        });
        SwingUtilities.invokeAndWait(() -> {
            // flush the EDT
        });
        Thread.sleep(1000);
        SwingUtilities.invokeAndWait(f::dispose);
    }
}