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How to create a Rectangle using JavaFX?
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
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