Jtable 表头问题

Question

如何来实现,通过右键让表格头来弹出菜单,来增加或隐藏表格列(弹出菜单是带附选的菜单项).就像Windows "我的电脑"表格的功能.现在能实现菜单弹出,后面的操作不知道怎么操作高手指点

Answer 1

此回复为自动发出,仅用于显示而已，并无任何其他特殊作用
楼主【kantebolei】截止到2008-07-02 13:01:06的历史汇总数据(不包括此帖)：
发帖的总数量:10                       发帖的总分数:280                      
结贴的总数量:8                        结贴的总分数:240                      
无满意结贴数:4                        无满意结贴分:80                       
未结的帖子数:2                        未结的总分数:40                       
结贴的百分比:80.00 %               结分的百分比:85.71 %                  
无满意结贴率:50.00 %               无满意结分率:33.33 %                  
楼主加油

Answer 2

给个例子你看，编译、运行环境：JDK6
如果JDK版本低，把排序那部分删了就行了import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Vector;import javax.swing.JButton;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JFrame;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SpringLayout;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableRowSorter;public class TableDemo implements ActionListener
{
    private JTable table;    private TableDataModal tableModel;    private TableRowSorter<TableDataModal> sorter;    private SpringLayout springLayout;    private JFrame frame;    private JButton btnAdd;    private JButton btnDelete;    private JPopupMenu popupMenu;    @SuppressWarnings("unchecked")
    private Vector<Vector> tableDataList = new Vector<Vector>();    public final String[] COLUMN_NAMES = {"序号", "WBS序号", "任务名称", "输出", "实际工时"};    @SuppressWarnings("unchecked")
    public final Class[] COLUMN_CLASSES = {Integer.class, Integer.class, String.class, String.class, Double.class};    private int serialNumber = 1;    private int[] columnWidths = new int[COLUMN_NAMES.length];    public static void main(String args[])
    {
        try
        {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            TableDemo window = new TableDemo();
            window.frame.setVisible(true);
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
    }    public TableDemo()
    {
        initialize();
    }    private void initialize()
    {
        frame = new JFrame();
        springLayout = new SpringLayout();
        frame.getContentPane().setLayout(springLayout);
        frame.setTitle("Table");
        frame.setBounds(100, 100, 500, 376);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        final JScrollPane scrollPane = new JScrollPane();
        frame.getContentPane().add(scrollPane);
        springLayout.putConstraint(SpringLayout.SOUTH, scrollPane, -38, SpringLayout.SOUTH, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.NORTH, scrollPane, 0, SpringLayout.NORTH, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.EAST, scrollPane, 0, SpringLayout.EAST, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.WEST, scrollPane, 0, SpringLayout.WEST, frame.getContentPane());        tableModel = new TableDataModal();
        table = new JTable(tableModel);
        sorter = new TableRowSorter<TableDataModal>(tableModel);
        sorter.toggleSortOrder(0);
        table.setRowSorter(sorter);
        scrollPane.setViewportView(table);        btnAdd = new JButton();
        btnAdd.addActionListener(this);
        btnAdd.setText("Add");
        frame.getContentPane().add(btnAdd);
        springLayout.putConstraint(SpringLayout.SOUTH, btnAdd, -4, SpringLayout.SOUTH, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.NORTH, btnAdd, -29, SpringLayout.SOUTH, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.EAST, btnAdd, -81, SpringLayout.EAST, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.WEST, btnAdd, -152, SpringLayout.EAST, frame.getContentPane());        btnDelete = new JButton();
        btnDelete.addActionListener(this);
        btnDelete.setText("Delete");
        frame.getContentPane().add(btnDelete);
        springLayout.putConstraint(SpringLayout.SOUTH, btnDelete, -4, SpringLayout.SOUTH, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.NORTH, btnDelete, -29, SpringLayout.SOUTH, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.EAST, btnDelete, -5, SpringLayout.EAST, frame.getContentPane());
        springLayout.putConstraint(SpringLayout.WEST, btnDelete, -76, SpringLayout.EAST, frame.getContentPane());        for(int i = 0; i < columnWidths.length; i++)
        {
            columnWidths[i] = table.getColumnModel().getColumn(i).getPreferredWidth();
        }        table.getTableHeader().addMouseListener(new MouseAdapter()
        {
            public void mouseClicked(MouseEvent e)
            {
                if(SwingUtilities.isRightMouseButton(e))
                {
                    getPopupMenu().show(e.getComponent(), e.getX(), e.getY());
                }
            }
        });
    }    private JPopupMenu getPopupMenu()
    {
        if(popupMenu == null)
        {
            popupMenu = new JPopupMenu();
            JCheckBoxMenuItem menuItem;            for(String item: COLUMN_NAMES)
            {
                menuItem = new JCheckBoxMenuItem(item);
                popupMenu.add(menuItem);
                menuItem.setSelected(true);
                menuItem.addActionListener(this);
            }
        }        return popupMenu;
    }    public void hideColumn(int index)
    {
        TableColumn tc = table.getColumnModel().getColumn(index);
        tc.setMinWidth(0);
        tc.setMaxWidth(0);
    }    public void showColumn(int index)
    {
        TableColumn tc = table.getTableHeader().getColumnModel().getColumn(index);
        tc.setMaxWidth(1000);
        tc.setMinWidth(15);
        tc.setPreferredWidth(columnWidths[index]);
    }    public void actionPerformed(ActionEvent e)
    {
        if(e.getSource() == btnAdd)
        {
            Vector<Object> data = new Vector<Object>();
            data.add(serialNumber++);
            data.add(002);
            data.add("变更");
            data.add("无");
            data.add(2.5);
            tableDataList.add(data);
            tableModel.insertRow(1);
        }
        else if(e.getSource() == btnDelete)
        {
            if(!tableDataList.isEmpty())
            {
                tableModel.delRow(0, 0);
            }
        }
        else if(e.getSource() instanceof JCheckBoxMenuItem)
        {
            JCheckBoxMenuItem menuItem = (JCheckBoxMenuItem)e.getSource();            if(menuItem.isSelected())
            {
                showColumn(table.getColumnModel().getColumnIndex(menuItem.getText()));
            }
            else
            {
                hideColumn(table.getColumnModel().getColumnIndex(menuItem.getText()));
            }
        }
    }    private class TableDataModal extends AbstractTableModel
    {
        //需要把楼下帖的内容复制到这里
    }
}

Answer 3

需要复制到楼上注释处的部分        private static final long serialVersionUID = 1L;        /**
         * 获得表格的总列数
         */
        public int getColumnCount()
        {
            return COLUMN_NAMES.length;
        }        /**
         * 获得表格的总行数
         */
        public int getRowCount()
        {
            return tableDataList.size();
        }        /**
         * 获得表格指定单元格的值
         * @param row 行
         * @param column 列
         */
        public Object getValueAt(int row, int column)
        {
            Object value = null;            // 如果指定单元格非空
            if(!tableDataList.isEmpty())
            {
                value = tableDataList.elementAt(row).elementAt(column);
            }            return value;
        }        /**
         * 获得指定列的列名
         * @param column 指定的列
         */
        public String getColumnName(int column)
        {
            return COLUMN_NAMES[column];
        }        /**
         * 获得指定的列对象
         * @param column 指定的列
         */
        @SuppressWarnings("unchecked")
        public Class getColumnClass(int column)
        {
            return COLUMN_CLASSES[column];
        }        /**
         * 获得可编辑的单元格
         * @param row 行
         * @param column 列
         */
        public boolean isCellEditable(int row, int column)
        {
            return (row == 0) && (column > 2);
        }        /**
         * 设置表格指定单元格的值
         * @param 值
         * @param row 行
         * @param column 列
         */
        @SuppressWarnings("unchecked")
        public void setValueAt(Object value, int row, int column)
        {
            tableDataList.elementAt(row).setElementAt(value, column);
            fireTableDataChanged();
        }        /**
         * 在表格末尾插入新行
         * @param rowCouont 将要插入的新行总数
         */
        public void insertRow(int newRowCount)
        {
            int rowCount = getRowCount();
            fireTableRowsInserted(rowCount - newRowCount, rowCount - 1);
        }        /**
         * 在表格任意位置插入新行
         * @param firstRow 开始行
         * @param lastRow 结束行
         */
        public void insertRow(int firstRow, int lastRow)
        {
            fireTableRowsInserted(firstRow, lastRow);
        }        /**
         * 删除指定的行
         * @param firstRow 开始行
         * @param lastRow 结束行
         */
        public void delRow(int firstRow, int lastRow)
        {
            int rowCount = getRowCount();            if(firstRow > rowCount - 1)
            {
                return;
            }            for(int i = lastRow; i >= firstRow; i--)
            {
                if(i < rowCount)
                {
                    tableDataList.removeElementAt(i);
                }
                else
                {
                    lastRow--;
                }
            }            fireTableRowsDeleted(firstRow, lastRow);
        }        /**
         * 删除所有行
         */
        public void delAllRow()
        {
            int rowCount = getRowCount();
            tableDataList.clear();
            fireTableRowsDeleted(0, rowCount - 1);
        }

Answer 4

在JDK5中编译、运行时需要注释或删除的代码，5以下的懒得弄import javax.swing.table.TableRowSorter;private TableRowSorter<TableDataModal> sorter;sorter = new TableRowSorter<TableDataModal>(tableModel);
sorter.toggleSortOrder(0);
table.setRowSorter(sorter);