如何在底部显示jframe中所有选项卡通用的按钮

JFrame frame = new JFrame();
frame.setLayout(new BorderLayout());

JTabbedPane tabbedPane = new JTabbedPane();
frame.add(tabbedPane, BorderLayout.CENTER);

JPanel tab1 = new JPanel();
tabbedPane.addTab("选项卡1", tab1);

JPanel tab2 = new JPanel();
tabbedPane.addTab("选项卡2", tab2);

// 添加更多选项卡...

// 注意：每个选项卡的内容可以根据需求自定义

JPanel buttonPanel = new JPanel();
frame.add(buttonPanel, BorderLayout.SOUTH);

JButton commonButton = new JButton("通用按钮");
buttonPanel.add(commonButton);

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

public class MainFrame extends JFrame {
    public MainFrame() {
        // 设置布局管理器为BorderLayout
        setLayout(new BorderLayout());

        // 创建选项卡面板
        JTabbedPane tabbedPane = new JTabbedPane();
        add(tabbedPane, BorderLayout.CENTER);

        // 创建选项卡1
        JPanel tab1 = new JPanel();
        tabbedPane.addTab("选项卡1", tab1);

        // 创建选项卡2
        JPanel tab2 = new JPanel();
        tabbedPane.addTab("选项卡2", tab2);

        // 创建按钮面板
        JPanel buttonPanel = new JPanel();
        add(buttonPanel, BorderLayout.SOUTH);

        // 创建通用按钮
        JButton commonButton = new JButton("通用按钮");
        buttonPanel.add(commonButton);
    }

    public static void main(String[] args) {
        MainFrame frame = new MainFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);
        frame.setVisible(true);
    }
}