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/* @test
   @bug 6824600
   @summary OOM occurs when setLookAndFeel() is executed in Windows L&F(XP style)
   @author Pavel Porvatov
   @modules java.desktop/com.sun.java.swing.plaf.windows
   @run main Test6824600
*/

import com.sun.java.swing.plaf.windows.DesktopProperty;

import java.awt.*;

public class Test6824600 {
    public static void main(String[] args) throws Exception {
        Toolkit toolkit = Toolkit.getDefaultToolkit();

        HackedDesktopProperty desktopProperty = new HackedDesktopProperty("Button.background", null);

        // Register listener in toolkit
        desktopProperty.getValueFromDesktop();

        int length = toolkit.getPropertyChangeListeners().length;

        // Make several invocations
        desktopProperty.getValueFromDesktop();
        desktopProperty.getValueFromDesktop();

        desktopProperty.invalidate();

        desktopProperty.getValueFromDesktop();
        desktopProperty.getValueFromDesktop();

        if (length != toolkit.getPropertyChangeListeners().length) {
            throw new RuntimeException("New listeners were added into Toolkit");
        }
    }

    public static class HackedDesktopProperty extends DesktopProperty {
        public HackedDesktopProperty(String key, Object fallback) {
            super(key, fallback);
        }

        // Publish the method
        public Object getValueFromDesktop() {
            return super.getValueFromDesktop();
        }
    }
}