如何让JTable水平延伸到JPanel中的视区之外

JScrollPane scrollPane = new JScrollPane(table);

panel.add(scrollPane);

table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); // 禁用自动调整列宽

scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

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

public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame("JTable Demo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // 创建JTable并设置数据
        String[] columnNames = {"Name", "Age", "Gender"};
        Object[][] data = {
                {"John", 25, "Male"},
                {"Jane", 30, "Female"},
                {"Bob", 35, "Male"}
        };
        JTable table = new JTable(data, columnNames);

        // 创建JScrollPane并将JTable添加到其中
        JScrollPane scrollPane = new JScrollPane(table);
        scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

        // 创建JPanel并将JScrollPane添加到其中
        JPanel panel = new JPanel(new BorderLayout());
        panel.add(scrollPane, BorderLayout.CENTER);

        frame.add(panel);
        frame.setSize(400, 300);
        frame.setVisible(true);
    }
}