Set Graphic to label - javafx

Question

I want to set Label to graphic. I tested this code:
private static final ImageView livePerformIcon;
static
{
livePerformIcon = new ImageView(MainApp.class.getResource("/images/Flex.jpg").toExternalForm());
}
final Label label = new Label();
label.setStyle("-fx-background-image: url(\"/images/Flex.jpg\");");
livePerformIcon.setFitHeight(20);
livePerformIcon.setFitWidth(20);
label.setGraphic(livePerformIcon);
But I don't see any image.
The only way that I found to make it work is this:
label.setStyle("-fx-background-image: url(\"/images/Flex.jpg\");");
Is there a way to solve this?

Answer 1

Not sure, but AFAIK controls should be created on the JavaFX Application thread, but you're creating ImageView in a static initializer, which I'm not sure if it's executed on the Application thread.
Besides: Do you really want livePerformIcon to be static???

Answer 2

This one made from the data used in the docs, works perfectly for me
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
public class LabelWithImages extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage stage) {
Scene scene = new Scene(new Group());
stage.setTitle("Label With Image Sample");
stage.setWidth(400);
stage.setHeight(180);
HBox hbox = new HBox();
//Replace the image you want to put up
Image image = new Image(getClass().getResourceAsStream("a.png"));
Label label = new Label("Demo Label");
label.setGraphic(new ImageView(image));
hbox.setSpacing(10);
hbox.getChildren().add((label));
((Group) scene.getRoot()).getChildren().add(hbox);
stage.setScene(scene);
stage.show();
}
}

Answer 3

Code snippets below will set the value of the property graphic of a label. You can use any of the two. I prefer using javafx css, just to implement the model-view-controller design.
// programmatically, provided with image input stream
label.setGraphic(new ImageView(new Image(getClass().getResourceAsStream("path/to/image.png"))));
// javafx css, provided with image url
.label {
-fx-graphic: url("path/to/image.png");
}