求删除JTable中的一列，的代码例子？？

Question

import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;public class AddRemoveCells implements ActionListener
{
    JTable table = null;
    DefaultTableModel defaultModel = null;    public AddRemoveCells()
    {
        JFrame f = new JFrame();
        String[] name = {"字段 1","字段 2","字段 3","字段 4","字段 5"};
        String[][] data = new String[5][5];
        int value =1;
        for(int i=0; i<data.length; i++)
        {
            for(int j=0; j<data[i].length ; j++)
                data[i][j] = String.valueOf(value++);
        }
                  
        defaultModel = new DefaultTableModel(data,name);
        table=new JTable(defaultModel);
        table.setPreferredScrollableViewportSize(new Dimension(400, 80));
        JScrollPane s = new JScrollPane(table);
        
        JPanel panel = new JPanel();
        JButton b = new JButton("增加行");
        panel.add(b);
        b.addActionListener(this);
        b = new JButton("增加列");
        panel.add(b);
        b.addActionListener(this);
        b = new JButton("删除行");
        panel.add(b);
        b.addActionListener(this);
        b = new JButton("删除列");
        panel.add(b);
        b.addActionListener(this);
        
        Container contentPane = f.getContentPane();
        contentPane.add(panel, BorderLayout.NORTH);
        contentPane.add(s, BorderLayout.CENTER);
        
    f.setTitle("AddRemoveCells");
        f.pack();
        f.setVisible(true);
        
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
    
    public void actionPerformed(ActionEvent e)
    {
        if(e.getActionCommand().equals("增加列"))
            defaultModel.addColumn("增加列");
        if(e.getActionCommand().equals("增加行"))
            defaultModel.addRow(new Vector());
        if(e.getActionCommand().equals("删除列"))
        {
            int columncount = defaultModel.getColumnCount()-1;
            if(columncount >= 0)
            {
                TableColumnModel columnModel = table.getColumnModel();
                TableColumn tableColumn = columnModel.getColumn(columncount);
                columnModel.removeColumn(tableColumn);
                defaultModel.setColumnCount(columncount);
            }
        }
        if(e.getActionCommand().equals("删除行"))
        {
            int rowcount = defaultModel.getRowCount()-1;
            if(rowcount >= 0)
            {
                defaultModel.removeRow(rowcount);
                defaultModel.setRowCount(rowcount);
            }
        }
        table.revalidate();
    }
    
    public static void main(String args[]) {
        new AddRemoveCells();
    }
}

Answer 1

import java.awt.event.*;import javax.swing.*;
import javax.swing.table.*;public class RemoveTableRowSample extends JFrame {    Object[][] data = new Object[][]{{"a1","a2","a3"},
                                     {"b1","b2","b3"},
                                     {"c1","c2","c3"},
                                     {"d1","d2","d3"},
                                     {"e1","e2","e3"},
                                     {"f1","f2","f3"}
                                      };
    String[] names = {"1", "2", "3"};
    DefaultTableModel tbModel = new DefaultTableModel(data,names);
    JTable table = new JTable(tbModel);
    JButton btnAdd = new JButton("ADD");
    JButton btnDelete = new JButton("DELETE");
    JScrollPane pane = new JScrollPane(table);    public RemoveTableRowSample() {
        getContentPane().setLayout(null);
        pane.setBounds(50,50,200,100);
        btnAdd.setBounds(50,200,90,26);
        btnDelete.setBounds(150,200,90,26);        getContentPane().add(pane);
        getContentPane().add(btnAdd);
        getContentPane().add(btnDelete);        setSize(360,280);
        setVisible(true);
        setResizable(false);        addListener();
    }    private void addListener() {
        btnAdd.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                tbModel.addRow(new Object[]{"add", "add","add"});
            }
        });        btnDelete.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                for (int i = 0; i < table.getRowCount(); i++) {
                    if (table.isRowSelected(i)) {
                        tbModel.removeRow(i);
                    }
                }
            }
        });
    }    public static void main(String[] args) {
        RemoveTableRowSample sample = new RemoveTableRowSample();
    }
}