在Java中创建自定义JButton

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

public class CustomJButton extends JButton {
    public CustomJButton(String text) {
        super(text);
    }

    @Override
    protected void paintComponent(Graphics g) {
        // 在此处自定义绘制按钮的代码
        // 例如：设置按钮的背景色和字体颜色
        g.setColor(Color.RED);
        g.fillRect(0, 0, getWidth(), getHeight());
        g.setColor(Color.WHITE);
        g.setFont(getFont().deriveFont(Font.BOLD, 16));
        FontMetrics fm = g.getFontMetrics();
        int x = (getWidth() - fm.stringWidth(getText())) / 2;
        int y = (getHeight() - fm.getHeight()) / 2 + fm.getAscent();
        g.drawString(getText(), x, y);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            JFrame frame = new JFrame("Custom JButton");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setSize(300, 200);
            frame.setLayout(new FlowLayout());
            frame.add(new CustomJButton("Click me!"));
            frame.setVisible(true);
        });
    }
}