print jface.resource.DeviceResourceManager whe program exit

[yidabu]

when my jface ApplicationWindow based program exit, it prints:

dwt.widgets.Display.Display dwtx.jface.resource.DeviceResourceManager.DeviceResourceManager

what's the means? 

the program not crashed, does it means some resource still not released ?

I'm not created such as Color、Cursor、Font、GC, and release images as fllows 

public class MyWindow : ApplicationWindow
{
	...

    public bool close()
    {
        small_image.dispose;
        large_image.dispose;
        return super.close();
    }
	...
}





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