尝试使用直线和椭圆在Java中绘制圆柱体

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

public class CylinderDrawing extends JFrame {

    public CylinderDrawing() {
        setTitle("Cylinder Drawing");
        setSize(400, 400);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
    }

    public void paint(Graphics g) {
        super.paint(g);

        Graphics2D g2d = (Graphics2D) g;

        int centerX = getWidth() / 2;
        int centerY = getHeight() / 2;
        int radius = 100;
        int height = 200;

        // 绘制圆柱体的底面
        g2d.drawOval(centerX - radius, centerY - radius, radius * 2, radius * 2);

        // 绘制圆柱体的顶面
        g2d.drawOval(centerX - radius, centerY - radius - height, radius * 2, radius * 2);

        // 绘制圆柱体的侧面
        g2d.drawLine(centerX - radius, centerY, centerX - radius, centerY - height);
        g2d.drawLine(centerX + radius, centerY, centerX + radius, centerY - height);
        g2d.drawLine(centerX - radius, centerY, centerX + radius, centerY);
        g2d.drawLine(centerX - radius, centerY - height, centerX + radius, centerY - height);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(() -> {
            CylinderDrawing cylinderDrawing = new CylinderDrawing();
            cylinderDrawing.setVisible(true);
        });
    }
}