在Java中没有旋转的块？

import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;

public class RotatingRectangle {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            JFrame frame = new JFrame("Rotating Rectangle");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.getContentPane().add(new RotatingRectanglePanel());
            frame.pack();
            frame.setVisible(true);
        });
    }
}

class RotatingRectanglePanel extends JPanel {
    private double angle = 0;

    public RotatingRectanglePanel() {
        setPreferredSize(new Dimension(400, 400));
        setBackground(Color.WHITE);
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        int x = getWidth() / 2;
        int y = getHeight() / 2;
        int width = 100;
        int height = 50;

        Rectangle2D rectangle = new Rectangle2D.Double(x - width / 2, y - height / 2, width, height);
        AffineTransform savedTransform = g2.getTransform();
        g2.translate(x, y);
        g2.rotate(Math.toRadians(angle));
        g2.translate(-x, -y);
        g2.setPaint(Color.BLUE);
        g2.fill(rectangle);
        g2.setTransform(savedTransform);

        angle += 1;
        if (angle >= 360) {
            angle = 0;
        }

        repaint();
    }
}