stage.xProperty().addListener(new ChangeListener<Number>() {
        @Override
        public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {
           System.out.println("X窗口现在坐标："+newValue);
           System.out.println("X窗口之前坐标："+oldValue);
        }
     });
     stage.yProperty().addListener(new ChangeListener<Number>() {
        @Override
        public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {
           System.out.println("Y窗口现在坐标："+newValue);
           System.out.println("Y窗口之前坐标："+oldValue);
        }
     });
//创建多个窗口，设置模式
Stage s1 =new Stage();
     //s1.initStyle(StageStyle.TRANSPARENT);//透明的
     s1.initStyle(StageStyle.UNIFIED);
     s1.show();
     Stage s2 =new Stage();
     s2.setTitle("5");
     s2.initStyle(StageStyle.UTILITY);
     //s2.initStyle(StageStyle.UNDECORATED);//白色不带装饰
     s2.show();
// APPLICATION_MODAL设置初始化模态
S2关闭之后才能操作其他窗口
Stage s1 =new Stage();
     s1.setTitle("s1");
     s1.show();
     Stage s2 =new Stage();
     s2.initModality(Modality.APPLICATION_MODAL);
     s2.setTitle("s2");
     s2.show();
// WINDOW_MODAL设置初始化模态
Stage s1 =new Stage();
     s1.setTitle("s1");
     Stage s2 =new Stage();
     //s2.initModality(Modality.APPLICATION_MODAL);
     s2.setTitle("s2");
     //设置s2和s1关联
     s1.initOwner(s2);
     s1.initModality(Modality.WINDOW_MODAL);
     s2.show();
     s1.show();

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.transform.Scale;
import javafx.stage.Stage;
public class javafx03tage extends Application {
    public  static  Stage stage;
    @Override
    public void start(Stage stage) throws Exception {
        //让舞台赋值给静态属性
        javafx03tage.stage =stage;
        stage.setTitle("小应用测试");
        //创建布局
        HBox hbox = new HBox();
        //创建控件
        TextField textField = new TextField();
        Button button = new Button("确定");
        button.setOnAction((e)->{
            String a = textField.getText();
            System.out.println("输入的内容为:"+a);
        });
        Button regist = new Button("注册");
        //写法1
//        regist.setOnAction((e)->{
//            regis();
//        });
//        写法2
        regist.setOnAction(e->javafx03tage.regis());
        //将控件加入布局
        hbox.getChildren().addAll(textField,button,regist);
//        hbox.getChildren().add(textField);
//        hbox.getChildren().add(button);
        //将布局加入场景
        Scene scene = new Scene(hbox,300,200);
        //将场景放入舞台
        stage.setScene(scene);
        stage.show();
    }
    public static void regis(){
        //创建垂直布局
        VBox vbox = new VBox();
        //创建控件
        TextField t1 = new TextField();
        TextField t2 = new TextField();
        Button b1 = new Button("注册");
        vbox.getChildren().addAll(t1,t2,b1);
        Scene scene = new Scene(vbox,300,200);
        javafx03tage.stage.setScene(scene);
    }
    public static void main(String[] args) {
        launch();
    }
}

public class platformcalss extends Application{
   public static void main(String[] args) {
     launch(args);
   }
   @Override
   public void start(Stage primaryStage) throws Exception {
     //设置为false，当窗口关闭，程序仍然运行,如要关闭则Platform.exit(); 若为true，窗口关闭，程序关闭
     //Platform.setImplicitExit(false);
     //是否支持3D效果
     boolean b = Platform.isSupported(ConditionalFeature.SCENE3D);
     Platform.runLater(new Runnable() {
        @Override
        public void run()
        {
           System.out.println("run方法里的线程名字："+Thread.currentThread().getName());
           //可以在这里更新组件
        }
     });
   }
}

public class Screencalss extends Application{
   public static void main(String[] args) {
     launch(args);
   }
   @Override
   public void start(Stage primaryStage) throws Exception {
     //获取屏幕
     Screen screen = Screen.getPrimary();
     //获取屏幕全部宽度，高度
     Rectangle2D rec1= screen.getBounds();
     //获取可视范围的宽度，高度
     Rectangle2D rec2= screen.getVisualBounds();
     System.out.println(rec1.getWidth());
     System.out.println(rec2.getWidth());
     Platform.exit();
   }
}