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JavaFX | VBox Class

  • Last Updated : 06 Sep, 2018

VBox is a part of JavaFX. VBox lays out its children in form of vertical columns. If the vbox has a border and/or padding set, then the contents will be layed out within those insets. VBox class extends Pane class.

Constructor of the class:

  1. VBox(): Creates a VBox layout with spacing = 0 and alignment at TOP_LEFT.
  2. VBox(double s): Creates a new VBox with specified spacing between children.
  3. VBox(double s, Node… c): Creates a new VBox with specified nodes and spacing between them.
  4. VBox(Node… c): Creates an VBox layout with spacing = 0.

Commonly Used Methods:

MethodExplanation
getAlignment()Returns the value of property alignment.
getSpacing()Returns the spacing between its children.
setAlignment(Pos value)Sets the Alignment of the VBox.
getChildren()Returns the nodes in the VBox.

Below programs illustrate the use of VBox class:

  1. Java Program to create a VBox and add it to the stage: In this program we will create a VBox named vbox. We will create a label and add it to the vbox. We will also create some buttons and add them to the VBox using the getChildren().add() function. Now create a scene and add the vbox to the scene and add the scene to the stage and call show() function to display the final results.




    // Java Program to create a VBox 
    // and add it to the stage
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.control.*;
    import javafx.scene.layout.*;
    import javafx.stage.Stage;
    import javafx.event.ActionEvent;
    import javafx.event.EventHandler;
    import javafx.scene.canvas.*;
    import javafx.scene.web.*;
    import javafx.scene.Group;
      
    public class VBOX_1 extends Application {
      
        // launch the application
        public void start(Stage stage)
        {
      
            try {
      
                // set title for the stage
                stage.setTitle("VBox");
      
                // create a VBox
                VBox vbox = new VBox();
      
                // create a label
                Label label = new Label("this is VBox example");
      
                // add label to vbox
                vbox.getChildren().add(label);
      
                // add buttons to VBox
                for (int i = 0; i < 10; i++)
                {
                    vbox.getChildren().add(new Button("Button " + (int)(i + 1)));
                }
      
                // create a scene
                Scene scene = new Scene(vbox, 300, 300);
      
                // set the scene
                stage.setScene(scene);
      
                stage.show();
            }
      
            catch (Exception e) {
      
                System.out.println(e.getMessage());
            }
        }
      
        // Main Method
        public static void main(String args[])
        {
      
            // launch the application
            launch(args);
        }
    }

    Output:

  2. Java Program to create a VBox, add spaces between its elements and add it to the stage: In this program we will create a VBox named vbox. We will set the spacing by passing a double value of space as an argument to the constructor. Now create a label and add it to the vbox. To add some buttons to the VBox use the getChildren().add() function. Finally, create a scene and add the vbox to the scene and add the scene to the stage and call show() function to display the final results.




    // Java Program to create a VBox, add 
    // spaces between its elements and add
    // it to the stage
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.control.*;
    import javafx.scene.layout.*;
    import javafx.stage.Stage;
    import javafx.event.ActionEvent;
    import javafx.event.EventHandler;
    import javafx.scene.canvas.*;
    import javafx.scene.web.*;
    import javafx.scene.Group;
      
    public class VBOX_2 extends Application {
      
        // launch the application
        public void start(Stage stage)
        {
      
            try {
      
                // set title for the stage
                stage.setTitle("VBox");
      
                // create a VBox
                VBox vbox = new VBox(10);
      
                // create a label
                Label label = new Label("this is VBox example");
      
                // add label to vbox
                vbox.getChildren().add(label);
      
                // add buttons to VBox
                for (int i = 0; i < 5; i++)
                {
                    vbox.getChildren().add(new Button("Button " + (int)(i + 1)));
                }
      
                // create a scene
                Scene scene = new Scene(vbox, 300, 300);
      
                // set the scene
                stage.setScene(scene);
      
                stage.show();
            }
      
            catch (Exception e) {
      
                System.out.println(e.getMessage());
            }
        }
      
        // Main Method
        public static void main(String args[])
        {
      
            // launch the application
            launch(args);
        }
    }

    Output:



  3. Java Program to create a VBox, add spaces between its elements, set an alignment and add it to the stage: In this program we will create a VBox named vbox. We will set the spacing by passing a double value of space as an argument to the constructor. Set the alignment of the VBox using the setAlignment() function. Then create a label and add it to the vbox. Add some buttons to the VBox using the getChildren().add() function. Finally, create a scene and add the vbox to the scene and add the scene to the stage and call show() function to display the final results.




    // Java Program to create a VBox, add spaces
    // between its elements, set an alignment 
    // and add it to the stage
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.control.*;
    import javafx.scene.layout.*;
    import javafx.stage.Stage;
    import javafx.event.ActionEvent;
    import javafx.event.EventHandler;
    import javafx.scene.Group;
    import javafx.geometry.Pos;
      
    public class VBOX_3 extends Application {
      
        // launch the application
        public void start(Stage stage)
        {
      
            try {
      
                // set title for the stage
                stage.setTitle("VBox");
      
                // create a VBox
                VBox vbox = new VBox(10);
      
                // create a label
                Label label = new Label("this is VBox example");
      
                // add label to vbox
                vbox.getChildren().add(label);
      
                // set alignment
                vbox.setAlignment(Pos.CENTER);
      
                // add buttons to VBox
                for (int i = 0; i < 5; i++)
                {
                    vbox.getChildren().add(new Button("Button " + (int)(i + 1)));
                }
      
                // create a scene
                Scene scene = new Scene(vbox, 300, 300);
      
                // set the scene
                stage.setScene(scene);
      
                stage.show();
            }
      
            catch (Exception e) {
      
                System.out.println(e.getMessage());
            }
        }
      
        // Main Method
        public static void main(String args[])
        {
      
            // launch the application
            launch(args);
        }
    }

    Output:

Note: The above programs might not run in an online IDE please use an offline compiler.

Reference: https://docs.oracle.com/javase/8/javafx/api/javafx/scene/layout/VBox.html

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