Java Swing无法看到水平滚动条

我想有一个水平滚动条来查看“描述”列中的内容

当第二列中的数据超过时，我希望显示一个水平滚动条。这是我的代码： ==========工作示例===============

import java.awt.*;

import javax.swing.*;
import javax.swing.plaf.basic.BasicBorders.MarginBorder;
import javax.swing.plaf.metal.MetalBorders.TableHeaderBorder;
import javax.swing.table.*;
import javax.swing.border.*;

public class TableRowRenderingTip extends JPanel
{
    static Object[] columnNames = {"Allowed Commands", "Description"};
    private final static Dimension scrollPaneDimenssion = new Dimension(70, 200);
    public TableRowRenderingTip()
    {       
        Object[][] data =
        {
            {"One",  "Allow proxies to act as tunnels for Allow proxies to act as tunnels for Allow proxies to act as tunnels for"},
            {"Two",  "Allow proxies to act as tunnels for Allow proxies to act as tunnels for Allow proxies to act as tunnels for"},
            {"Three","Allow proxies to act as tunnels for Allow proxies to act as tunnels for Allow proxies to act as tunnels for" },
            {"Four", "Allow proxies to act as tunnels for Allow proxies to act as tunnels for Allow proxies to act as tunnels for"},

        };      
        DefaultTableModel model = new DefaultTableModel(data, columnNames);     
        add( createData(model) );
    }



    private static JComponent createData(final DefaultTableModel model) 
    {       
        JTable inLineTable = new JTable( model );

        inLineTable.setShowGrid(false);
        inLineTable.setShowVerticalLines(false);

        inLineTable.getColumn(columnNames[0]).setMaxWidth(130);
        inLineTable.getColumn(columnNames[0]).setMinWidth(130);
        inLineTable.getColumn(columnNames[0]).setResizable(false);
        inLineTable.getColumn(columnNames[1]).setMinWidth(270);
        inLineTable.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);

        JScrollPane scrollPane = new JScrollPane(inLineTable);
        scrollPane.setMinimumSize(scrollPaneDimenssion);
        scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        return scrollPane;

    }

    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                createAndShowGUI();
            }
        });
    }

    public static void createAndShowGUI()
    {
        JFrame.setDefaultLookAndFeelDecorated(true);
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);       
        frame.add( new TableRowRenderingTip() );
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

================================================== 但是

滚动窗格

大小是固定的： 我想使用水平滚动条查看第二列中的数据

---

尽管问题中使用了粗体大字体，但如果没有SSCCE/MCVE、简短、可运行、可编译、，使用本地变量中JTable的硬编码值，我在那里添加了一个工作示例，试图找到如何获取您必须使用的水平滚动条，以覆盖JScrollPane的get/setPreferredScrollableViewportSize，但是我很抱歉，我发布的代码生成了一些类似于这里发布的图片的东西。代码甚至没有显示垂直滚动条。为了生成图片中的图片，我需要一个框架。因此，我在一个小程序中进行了复制。不管怎样，我从感谢你的帮助中得到了答案：）