下面是一个简单的示例，使用JavaFX实现了一个基本的图形编辑器，可以绘制矩形和圆形。

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;public class GraphicsEditor extends Application {private Canvas canvas;private GraphicsContext gc;private ShapeType currentShapeType;private double startX, startY, endX, endY;public enum ShapeType {RECTANGLE, CIRCLE}@Overridepublic void start(Stage primaryStage) throws Exception {canvas = new Canvas(800, 600);gc = canvas.getGraphicsContext2D();canvas.setOnMousePressed(e -> {startX = e.getX();startY = e.getY();});canvas.setOnMouseReleased(e -> {endX = e.getX();endY =