How to add colors to nodes in JavaFX?

JavaFXObject Oriented ProgrammingProgramming

You can apply colors to nodes in JavaFX using the setFill() and setStroke() methods. The setFill() method adds color to the surface area of the node whereas the setStroke() method applies color to the boundary of the node.

Both methods accept an object of the javafx.scene.paint.Paint class as a parameter. It is the base class for the color and gradients that are used to fill the shapes and backgrounds with color.

The javafx.scene.paint.Color class in JavaFX is a subclass of the Paint and it encapsulates all the colors in RGB color space (as its properties).

To apply color to a geometrical shape or background or the stroke of shape, you need to invoke the respective method by passing a Color object representing the desired color.

Example

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Ellipse;
import javafx.scene.shape.Polygon;
import javafx.scene.shape.Rectangle;
public class ColorExample extends Application {
   public void start(Stage stage) {
      //Drawing a circle
      Circle circle = new Circle(75.0f, 65.0f, 40.0f );
      //Drawing a Rectangle
      Rectangle rect = new Rectangle(150, 30, 100, 65);
      //Drawing an ellipse
      Ellipse ellipse = new Ellipse(330, 60, 60, 35);
      //Drawing Polygon
      Polygon poly = new Polygon(410, 60, 430, 30, 470, 30, 490, 60, 470, 100, 430, 100 );
      //Color by name
      circle.setFill(Color.CHOCOLATE);
      circle.setStrokeWidth(5);
      circle.setStroke(Color.DARKRED);
      //Using RGB
      rect.setFill(Color.rgb(150, 0, 255));
      rect.setStrokeWidth(5);
      rect.setStroke(Color.DARKRED);
      //Using HSB
      ellipse.setFill(Color.hsb(50, 1, 1));
      ellipse.setStrokeWidth(5);
      ellipse.setStroke(Color.DARKRED);
      //Using web
      poly.setFill(Color.web("#E9967A"));
      poly.setStrokeWidth(5);
      poly.setStroke(Color.DARKRED);
      //Setting the stage
      Group root = new Group(circle, ellipse, rect, poly);
      Scene scene = new Scene(root, 600, 150);
      stage.setTitle("Setting Colors");
      stage.setScene(scene);
      stage.show();
   }
   public static void main(String args[]){
      launch(args);
   }
}

Output

raja
Published on 16-May-2020 10:19:28
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