调整双 JTable 中列大小的问题

我正在创建一个包含 2 个 JTable 的自定义组件，一个作为主数据网格，另一个作为始终可见的摘要栏，我已经提出了这个解决方案，但是调整列大小并没有按应有的方式工作，任何想法我做错了什么？

import java.awt.BorderLayout;  
import java.awt.Dimension;  
import java.awt.event.WindowAdapter;  
import java.awt.event.WindowEvent;  
import javax.swing.JFrame;  
import javax.swing.JScrollPane;  
import javax.swing.JTable;  
import javax.swing.ListSelectionModel;  
import javax.swing.SwingUtilities;    
public class FixedRow2Tables extends JFrame    
{  
    private static final long serialVersionUID = 4676303089799270571L;  
    Object[][] data;  
    Object[] column;  
    JTable fixedTable, table;  

    public FixedRow2Tables()    
    {
        super("Fixed Row Example");  

        Object[][] mainData = new Object[][] { { "a", "", "", "", "", "" },  
                { "", "b", "", "", "", "" }, { "", "", "c", "", "", "" },  
                { "", "", "", "d", "", "" }, { "", "", "", "", "e", "" },  
                { "", "", "", "", "", "f" } };  
        Object[][] summaryData = { { "fixed1", "", "", "", "", "" },  
                { "fixed2", "", "", "", "", "" } };  
        column = new Object[] { "A", "B", "C", "D", "E", "F" };  

        table = new JTable(mainData, column);  
        table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

        fixedTable = new JTable(summaryData, column);
        fixedTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        fixedTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        fixedTable.setTableHeader(null);
        fixedTable.setColumnModel(table.getColumnModel());

        JScrollPane scroll = new JScrollPane(table);
        scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

        scroll.setPreferredSize(new Dimension(400, 100));
        getContentPane().add(scroll, BorderLayout.CENTER);
        getContentPane().add(fixedTable, BorderLayout.SOUTH);
    }

    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                FixedRow2Tables frame = new FixedRow2Tables();
                frame.addWindowListener(new WindowAdapter()
                {
                    public void windowClosing(WindowEvent e)
                    {
                        System.exit(0);
                    }
                });
                frame.pack();
                frame.setVisible(true);
            }
        });
    }
}

fixedTable.setColumnModel(table.getColumnModel());

问题就出在这一行。如果您将其注释掉，则表的行为正常。如果这破坏了您的代码（因为我不知道您到底想做什么），请发表评论。

但正如您在评论中添加的那样，您想要同步两个表。我发现一个论坛帖子正好涵盖了这个问题：

http://forums.sun.com/thread.jspa?threadID=713021 http://forums.sun.com/thread.jspa?threadID=713021

玩得开心！

P.S.：以防万一论坛帖子消失（只需复制文本）：

首先把桌子连接起来。必须共享 ColumnModel 否则它不起作用。这两个面板都有一个 JTable 字段以及委托给 JTable 的 set 和 get ColumnModel 方法。

infoPanel.setColumnModel(overviewPanel.getColumnModel());
overviewPanel.getColumnModel().addColumnModelListener(infoPanel);    
infoPanel.getColumnModel().addColumnModelListener(overviewPanel);

然后处理ChangeEvent：

public void columnMarginChanged(ChangeEvent event) {
    final TableColumnModel eventModel = (DefaultTableColumnModel)event.getSource();
    final TableColumnModel thisModel = getTable().getColumnModel();
    final int columnCount = eventModel.getColumnCount();


    for (int i = 0; i < columnCount; i++) {
      thisModel.getColumn(i).setWidth(eventModel.getColumn(i).getWidth());
    }
    repaint();
}