JavaFX 监听窗口关闭事件实例详解

package sample;import javafx.application.Application;import javafx.beans.value.ChangeListener;import javafx.beans.value.ObservableValue;import javafx.event.EventHandler;import javafx.fxml.FXMLLoader;import javafx.scene.Parent;import javafx.scene.Scene;import javafx.stage.Stage;import javafx.stage.WindowEvent;public class Main extends Application {  @Override  public void start(Stage primaryStage) throws Exception{    Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));    primaryStage.setTitle("Hello World");    primaryStage.setScene(new Scene(root, 300, 275));    primaryStage.show();    primaryStage.setOnCloseRequest(new EventHandler<WindowEvent>() {      @Override      public void handle(WindowEvent event) {        System.out.print("监听到窗口关闭");      }    });  }  public static void main(String[] args) {    launch(args);  }}