显示器自己有个物理尺寸，windows 可以通过如下的方式设置缩放比例，还可以设置显示器分辨率；
public class ScreenSizeTest {private static Logger logger = LoggerFactory.getLogger(ScreenSizeTest.class);public static void main(String[] args) {Toolkit defaultToolkit = Toolkit.getDefaultToolkit();Dimension screenSize = defaultToolkit.getScreenSize();double width2 = screenSize.getWidth();double height2 = screenSize.getHeight();logger.info(String.format("显示器尺寸：%s x %s",width2,height2));GraphicsDevice graphDevice = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();DisplayMode disMode = graphDevice.getDisplayMode();int width = disMode.getWidth();int height = disMode.getHeight();logger.info(String.format("显示器分辨率：%s x %s",width,height));GraphicsConfiguration gc = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration();AffineTransform tx = gc.getDefaultTransform();double uiScaleX = tx.getScaleX();double uiScaleY = tx.getScaleY();logger.info(String.format("显示器分辨率缩放比例，X：%s，Y：%s",uiScaleX,uiScaleY));}}
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