JavaFX获取屏幕尺寸

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
double width = screenSize.getWidth();
double height = screenSize.getHeight();

2 JavaFX

Rectangle2D screenRectangle = Screen.getPrimary().getBounds();
double width = screenRectangle.getWidth();
double height = screenRectangle.getHeight();