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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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import java.awt.Frame;

import java.awt.Panel;

import java.awt.event.MouseWheelEvent;

import javax.swing.SwingUtilities;

/**

 * @test

 * @bug 8049533

 * @summary SwingUtilities.convertMouseEvent misses

 *      MouseWheelEvent.preciseWheelRotation

 * @run main bug8049533

 */

public class bug8049533 {

    private static final double PRECISE_WHEEL_ROTATION = 3.14;

    public static void main(String[] args) {

        Frame frame = new Frame();

        Panel panel = new Panel();

        frame.add(panel);

        MouseWheelEvent event = new MouseWheelEvent(panel,

                0, 0, 0, 0, 0, 0, 0, 0, false, 0, 0,

                2, // wheelRotation

                PRECISE_WHEEL_ROTATION); // preciseWheelRotation

        MouseWheelEvent convertedEvent = (MouseWheelEvent) SwingUtilities.

                convertMouseEvent(event.getComponent(), event, null);

        if (convertedEvent.getPreciseWheelRotation() != PRECISE_WHEEL_ROTATION) {

            throw new RuntimeException("PreciseWheelRotation field is not copied!");

        }

    }

}