JavaFx：6、screen类

package fx.com;

import javafx.application.Application;
import javafx.geometry.Rectangle2D;
import javafx.stage.Screen;
import javafx.stage.Stage;

public class Main extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    
    @Override
    public void start(Stage primaryStage) throws Exception {
        Screen screen = Screen.getPrimary();
        // 获取整个屏幕的宽高
        Rectangle2D rec1 = screen.getBounds();
        // 获取可视范围的宽度和高度
        Rectangle2D rec2 = screen.getVisualBounds();
        // 获取DPI
        double dpi = screen.getDpi();

        System.out.println(rec1.toString());
        System.out.println(rec2.toString());
        System.out.println("当前屏幕的DPI：" + dpi);
    }
}