HelloWorld.java

package helloworld;
 
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
 

public class HelloWorld extends Application {
	public class LabelLien extends Label {
		LabelLien(String text){
			LabelLien lbl = this;
			
			lbl.setText(text);
			lbl.setOnMouseEntered(new EventHandler<MouseEvent>() {
	            @Override
	            public void handle(MouseEvent e) {
	            	lbl.setTextFill(Color.rgb(210, 39, 30));
	            }
	          });
			lbl.setOnMouseExited(new EventHandler<MouseEvent>() {
			      @Override
			      public void handle(MouseEvent e) {
			    	  lbl.setTextFill(Color.rgb(21, 117, 84));
			      }
			 });
		}
	}
	
	public static void main(String[] args) {
        launch(args);
    }
    
    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Hello World!");
        
        HBox hbox = new HBox();
        final Label label1 = new LabelLien("Searchong long ");
        hbox.getChildren().add((label1));
        StackPane root = new StackPane();
        hbox.setSpacing(10);
        root.getChildren().add(hbox);
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();
    }
}