JTable隐藏某列后如何再恢复显示？

下面是我总结的一个操作表格列隐藏和显示的工具类：

Java代码  

1. package com.swing.table;  
2.   
3. import javax.swing.JTable;  
4. import javax.swing.table.TableColumn;  
5. import javax.swing.table.TableColumnModel;  
6.   
7. public class TableUtil3  
8. {  
9.       
10.     private TableUtil3()  
11.     {  
12.         throw new Error("Don't let anyone instantiate this class.");  
13.     }  
14.       
15.     /*** 
16.      * hide specified column 
17.      *  
18.      * @param table 
19.      * @param column 
20.      */  
21.     public static void hideTableColumn(JTable table, int column)  
22.     {  
23.         TableColumnModel columns = table.getColumnModel();  
24.         TableColumn column_id_data = columns.getColumn(column);  
25.         column_id_data.setMaxWidth(0);  
26.         column_id_data.setPreferredWidth(0);  
27.         column_id_data.setMinWidth(0);  
28.           
29.         TableColumn column_id_header = table.getTableHeader().getColumnModel()  
30.                 .getColumn(column);  
31.         column_id_header.setMaxWidth(0);  
32.         column_id_header.setPreferredWidth(0);  
33.         column_id_header.setMinWidth(0);  
34.     }  
35.     /*** 
36.      * show specified column 
37.      *  
38.      * @param table 
39.      * @param column 
40.      * @param width 
41.      */  
42.     public static void showTableColumn(JTable table, int column)  
43.     {  
44.         int width=40;  
45.         TableColumnModel columns = table.getColumnModel();  
46.         TableColumn column_id_data = columns.getColumn(column);  
47.           
48.         column_id_data.setMaxWidth(width+100);  
49.         column_id_data.setPreferredWidth(width);  
50.         column_id_data.setMinWidth(width);  
51.          
52. //        column_id_data.setResizable(true);  
53.         TableColumn column_id_header = table.getTableHeader().getColumnModel()  
54.                 .getColumn(column);  
55.         column_id_header.setMaxWidth(width+100);  
56.         column_id_header.setPreferredWidth(width);  
57.         column_id_header.setMinWidth(width);  
58. //        column_id_header.setResizable(true);  
59.     }  
60. }  

调用上述工具类的代码如下： 

//show id column

JButton showIDBtn = new JButton("show id");

showIDBtn.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

TableUtil3.showTableColumn(table, 6);

}

});

button02Pane.add(showIDBtn);

//hide id column

JButton hideIDBtn = new JButton("hide id");

hideIDBtn.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

TableUtil3.hideTableColumn(table, 6);

}

});

button02Pane.add(hideIDBtn);