Set Height and Width of Stage and Scene in javafx

Question

• I develop one javafx application.
• In my application there are two scenes and one stage.
• In application the height and width for both scenes are same or c

Answer 1

That is because the Stage adapts its size to the scene, unless explicitly instructed diferently...

To here is one solution:

stage.setScene(scene2);
stage.setHeight(1000);
stage.setWidth(1000);

And a sample application:

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;

public class Test extends Application {

    @Override
    public void start(final Stage stage) throws Exception {

        AnchorPane anchor1 = new AnchorPane();
        final Scene scene1 = new Scene(anchor1, 250, 250);
        Button boton1 = new Button();
        anchor1.getChildren().add(boton1);

        AnchorPane anchor2 = new AnchorPane();
        final Scene scene2 = new Scene(anchor2, 500, 500);
        Button boton2 = new Button();
        anchor2.getChildren().add(boton2);

        boton2.setOnAction(new EventHandler() {

            @Override
            public void handle(ActionEvent arg0) {
                // TODO Auto-generated method stub
                stage.setScene(scene1);
                stage.setHeight(1000);
                stage.setWidth(1000);
            }
        });

        boton1.setOnAction(new EventHandler() {

            @Override
            public void handle(ActionEvent arg0) {
                // TODO Auto-generated method stub
                stage.setScene(scene2);
                stage.setHeight(1000);
                stage.setWidth(1000);
            }
        });
        stage.setScene(scene1);
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}