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JavaFX ImageView

The JavaFX ImageView control can display an image inside a JavaFX GUI. The ImageView control must be added to the scene graph to be visible. The JavaFX ImageView control is represented by the class javafx.scene.image.ImageView .

Creating an ImageView

You create an ImageView control instance by creating an instance of the ImageView class. The constructor of the ImageView class needs an instance of a javafx.scene.image.Image as parameter. The Image object represents the image to be displayed by the ImageView control.

Here is a JavaFX ImageView instantiation example:

FileInputStream input = new FileInputStream("resources/images/iconmonstr-home-6-48.png"); Image image = new Image(input); ImageView imageView = new ImageView(image);

First a FileInputStream is created which points to the image file of the image to display.

Second an Image instance is created, passing the FileInputStream as parameter to the Image constructor. This way the Image class knows where to load the image file from.

Third an ImageView instance is created, passing the Image instance as parameter to the ImageView constructor.

Adding an ImageView to the Scene Graph

To make the ImageViewl visible you must add it to the scene graph. This means adding it to a Scene object. Since ImageView is not a subclass of javafx.scene.Parent it cannot be added directly to the scene grahp. It must be nested inside another component, for instance a layout component.

Here is an example that attaches a JavaFX ImageView to the scene graph by nesting it inside a HBox layout component:

package com.jenkov.javafx.controls;  import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.image.Image; import javafx.scene.image.ImageView; import javafx.scene.layout.HBox; import javafx.stage.Stage;  import java.io.FileInputStream;  public class ImageViewExperiments extends Application  {       @Override     public void start(Stage primaryStage) throws Exception {         primaryStage.setTitle("ImageView Experiment 1");          FileInputStream input = new FileInputStream("resources/images/iconmonstr-home-6-48.png");         Image image = new Image(input);         ImageView imageView = new ImageView(image);          HBox hbox = new HBox(imageView);          Scene scene = new Scene(hbox, 200, 100);         primaryStage.setScene(scene);         primaryStage.show();      }      public static void main(String[] args) {         Application.launch(args);     }  }

The result of running the above JavaFX ImageView example is an application that looks like this:

JavaFX ImageView

ImageView in Labels and Buttons

It is possible to use an ImageView in both a JavaFX Label and Button. This will cause the Label and Button to display the ImageView to the left of the text in the Label or Button . See the texts aboutJavaFX Label andJavaFX Button for information about how to do that.

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