在Swing中，有没有办法在自定义绘制的图表中间显示项目？

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

public class CustomChart extends JPanel {

    private String project;

    public CustomChart(String project) {
        this.project = project;
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        Graphics2D g2d = (Graphics2D) g;

        // 绘制图表的代码

        // 获取面板的宽度和高度
        int width = getWidth();
        int height = getHeight();

        // 设置字体和颜色
        Font font = new Font("Arial", Font.BOLD, 16);
        g2d.setFont(font);
        g2d.setColor(Color.BLACK);

        // 获取项目字符串的宽度和高度
        FontMetrics fontMetrics = g2d.getFontMetrics();
        int stringWidth = fontMetrics.stringWidth(project);
        int stringHeight = fontMetrics.getHeight();

        // 计算项目字符串的位置
        int x = (width - stringWidth) / 2;
        int y = (height - stringHeight) / 2 + fontMetrics.getAscent();

        // 在图表中间绘制项目字符串
        g2d.drawString(project, x, y);
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Custom Chart");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);

        CustomChart chart = new CustomChart("Project A");
        frame.add(chart);

        frame.setVisible(true);
    }
}