在JPanel中绘制文本

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

public class TextPanel extends JPanel {
    private String text;

    public TextPanel(String text) {
        this.text = text;
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setFont(new Font("Serif", Font.PLAIN, 24));
        g.drawString(text, 50, 50);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            JFrame frame = new JFrame("Text Panel");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setSize(300, 200);
            frame.add(new TextPanel("Hello, World!"));
            frame.setVisible(true);
        });
    }
}