FxCanvasExample7.java

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class FxCanvasExample7 extends Application
{
	public static void main(String[] args)
	{
		Application.launch(args);
	}

	@Override
	public void start(Stage stage)
	{
		// Create the Canvas
		Canvas canvas = new Canvas(400, 200);
		// Get the graphics context of the canvas
		GraphicsContext gc = canvas.getGraphicsContext2D();
		// Set line width
		gc.setLineWidth(2.0);
		// Set fill color
		gc.setFill(Color.GREEN);
		// Draw a rounded Rectangle
		gc.fillRoundRect(50, 50, 300, 100, 10, 10);
		// Clear the rectangular area from the canvas
		gc.clearRect(80, 80, 130, 50);

		// Create the Pane
		Pane root = new Pane();
		// Set the Style-properties of the Pane
		root.setStyle("-fx-padding: 10;" +
				"-fx-border-style: solid inside;" +
				"-fx-border-width: 2;" +
				"-fx-border-insets: 5;" +
				"-fx-border-radius: 5;" +
				"-fx-border-color: blue;");

		// Add the Canvas to the Pane
		root.getChildren().add(canvas);
		// Create the Scene
		Scene scene = new Scene(root);
		// Add the Scene to the Stage
		stage.setScene(scene);
		// Set the Title of the Stage
		stage.setTitle("Clearing the Area of a Canvas");
		// Display the Stage
		stage.show();
	}
}