How to create a circle using JavaFX?

JavaObject Oriented ProgrammingProgramming

A circle is a line forming a closed loop, every point on which is a fixed distance from a center point. A circle is defined by its center and radius − distance from the center to any point on the circle.

In JavaFX a circle is represented by the javafx.scene.shape.Circle class. This class contains three properties they are −

  • centerX − This property represents the x coordinate of the center of a circle, you can set the value to this property using the setCenterX() method.

  • centerY − This property represents y coordinate of the center of a circle, you can set the value to this property using the setCenterY() method.

  • radius − The radius of the circle in pixels, you can set the value to this property using the setRadius() method.

To create a circle you need to −

  • Instantiate the class Circle.

  • Set the required properties using the setter methods or, bypassing them as arguments to the constructor.

  • Add the created node (shape) to the Group object.

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;
public class DrawingCircle extends Application {
   public void start(Stage stage) {
      //Drawing a Circle
      Circle circle = new Circle();
      //Setting the properties of the circle
      circle.setCenterX(300.0f);
      circle.setCenterY(135.0f);
      circle.setRadius(100.0f);
      //Setting other properties
      circle.setFill(Color.DARKCYAN);
      circle.setStrokeWidth(8.0);
      circle.setStroke(Color.DARKSLATEGREY);
      //Setting the Scene
      Group root = new Group(circle);
      Scene scene = new Scene(root, 595, 300, Color.BEIGE);
      stage.setTitle("Drawing a Circle");
      stage.setScene(scene);
      stage.show();
   }
   public static void main(String args[]){
      launch(args);
   }
}

Output

raja
Published on 14-Apr-2020 11:15:14
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