JavaFX | Класс HBox

HBox является частью JavaFX. HBox размещает своих дочерних элементов в виде горизонтальных столбцов. Если для HBox установлены границы и / или отступы, то содержимое будет размещено внутри этих вставок. Класс HBox расширяет класс Pane .

Конструкторы класса:

• HBox () : создает объект HBox без узлов.
• HBox (double s) : создает HBox с интервалом между узлами.

Часто используемые методы:

Below programs illustrate the use of HBox class:

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

   // Java Program to create a HBox // 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 HBOX_1 extends Application {        // launch the application     public void start(Stage stage)     {            try {                // set title for the stage             stage.setTitle("HBox");                // create a HBox             HBox hbox = new HBox();                // create a label             Label label = new Label("this is HBox example");                // add label to hbox             hbox.getChildren().add(label);                // add buttons to HBox             for (int i = 0; i < 10; i++)              {                 hbox.getChildren().add(new Button("Button "                                             + (int)(i + 1)));             }                // create a scene             Scene scene = new Scene(hbox, 800, 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 HBox, add spaces between its elements and add it to the stage: In this program we will create a HBox named hbox. 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 hbox. To add some buttons to the HBox use the getChildren().add() function. Finally, create a scene and add the hbox to the scene and add the scene to the stage and call show() function to display the final results.

   // Java Program to create a HBox, 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 HBOX_2 extends Application {        // launch the application     public void start(Stage stage)     {            try {                // set title for the stage             stage.setTitle("HBox");                // create a HBox             HBox hbox = new HBox(10);                // create a label             Label label = new Label("this is HBox example");                // add label to hbox             hbox.getChildren().add(label);                // add buttons to HBox             for (int i = 0; i < 5; i++)              {                 hbox.getChildren().add(new Button("Button "                                            + (int)(i + 1)));             }                // create a scene             Scene scene = new Scene(hbox, 800, 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 HBox, add spaces between its elements, set an alignment and add it to the stage: In this program we will create a HBox named hbox. Set the spacing by passing a double value of space as an argument to the constructor. Set the alignment of the HBox using the setAlignment() function. Then create a label and add it to the hbox. Add some buttons to the HBox using the getChildren().add() function. Finally, create a scene and add the hbox to the scene and add the scene to the stage and call show() function to display the final results.

   // Java Program to create a HBox, 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.canvas.*; import javafx.scene.web.*; import javafx.scene.Group; import javafx.geometry.*;    public class HBOX_3 extends Application {        // launch the application     public void start(Stage stage)     {            try {                // set title for the stage             stage.setTitle("HBox");                // create a HBox             HBox hbox = new HBox(10);                // setAlignment             hbox.setAlignment(Pos.CENTER);                // create a label             Label label = new Label("this is HBox example");                // add label to hbox             hbox.getChildren().add(label);                // add buttons to HBox             for (int i = 0; i < 5; i++)              {                 hbox.getChildren().add(new Button("Button "                                            + (int)(i + 1)));             }                // create a scene             Scene scene = new Scene(hbox, 800, 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/javafx/2/api/javafx/scene/layout/HBox.html

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