How to create a Rectangle using JavaFX?

JavaObject Oriented ProgrammingProgramming

A Rectangle is a closed a polygon with four edges, the angle between any two edges is a right angle and the opposite sides are concurrent. It is defined by its height and width, the lengths of the vertical and horizontal sides respectively.

In JavaFX a Rectangle is represented by the javafx.scene.shape.Rectangle class. This class contains four properties they are −

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

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

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

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

To create a Rectangle you need to −

  • Instantiate the class Rectangle.

  • 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.Rectangle;
public class DrawinRectangle extends Application {
   public void start(Stage stage) {
      //Drawing a Rectangle
      Rectangle shape = new Rectangle();
      //Setting the properties of the rectangle
      shape.setX(150.0f);
      shape.setY(75.0f);
      shape.setWidth(300.0f);
      shape.setHeight(150.0f);
      //Setting other properties
      shape.setFill(Color.DARKCYAN);
      shape.setStrokeWidth(8.0);
      shape.setStroke(Color.DARKSLATEGREY);  
      //Setting the Scene
      Group root = new Group(shape);
      Scene scene = new Scene(root, 595, 300, Color.BEIGE);
      stage.setTitle("Drawing Rectangle");
      stage.setScene(scene);
      stage.show();
   }
   public static void main(String args[]){
      launch(args);
   }
}

Output

Rounded Rectangle

In addition to the above-mentioned properties. The Rectangle class also provides two more properties namely −

  • arcWidth − This property represents the diameter of the arc at the 4 corners. You can set value it using the setArcWidth() method.

  • arcHeight − This property represents the height of the arc at the 4 corners. You can set value it using the setArcHeight() method.

By setting values to these you can draw a rectangle with rounded/arced edges −

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.Rectangle;
public class DrawingRoundedRectangle extends Application {
   public void start(Stage stage) {
      //Drawing a Rectangle
      Rectangle shape = new Rectangle();
      //Setting the properties of the rectangle
      shape.setX(150.0f);
      shape.setY(75.0f);
      shape.setWidth(300.0f);
      shape.setHeight(150.0f);
      shape.setArcHeight(30.0);
      shape.setArcWidth(30.0);
      //Setting other properties
      shape.setFill(Color.DARKCYAN);
      shape.setStrokeWidth(8.0);
      shape.setStroke(Color.DARKSLATEGREY);
      //Setting the Scene
      Group root = new Group(shape);
      Scene scene = new Scene(root, 595, 300, Color.BEIGE);
      stage.setTitle("Drawing Rectangle");
      stage.setScene(scene);
      stage.show();
   }
   public static void main(String args[]){
      launch(args);
   }
}

Output

raja
Published on 14-Apr-2020 07:48:45
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