Java Swing使用鼠标移动形状

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class ShapeMoveExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Shape Move Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 400);

        JPanel panel = new JPanel() {
            private int x = 100;
            private int y = 100;

            @Override
            protected void paintComponent(Graphics g) {
                super.paintComponent(g);
                g.setColor(Color.RED);
                g.fillRect(x, y, 50, 50);
            }
        };

        panel.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseMoved(MouseEvent e) {
                panel.x = e.getX();
                panel.y = e.getY();
                panel.repaint();
            }
        });

        frame.add(panel);
        frame.setVisible(true);
    }
}