swing【最后一弹】JTable仿写简单Excel！

历时五天终于把所有的常用swing界面组件过了一遍，很多细节还需日后加深。愈发体会熟练查阅jdk文档的重要性，java各种类和方法太繁琐根本记不住，只能靠熟练的文档粘贴，用Eclipse会好很多。

源代码：

//source code
import java.awt.BorderLayout ;
import java.awt.event.ActionListener ;
import java.awt.event.ActionEvent ;
import java.awt.event.WindowListener ;
import java.awt.event.WindowAdapter ;
import java.awt.event.WindowEvent ;
import javax.swing.JFrame ;
import javax.swing.JButton ;
import javax.swing.JTable ;
import javax.swing.JPanel ;
import javax.swing.JScrollPane ;
import javax.swing.table.DefaultTableModel ;
import javax.swing.table.TableColumn ;
import javax.swing.table.TableColumnModel ;

class MyAction implements ActionListener
{
    private JFrame frame = new JFrame("通讯录表格") ;
    private JPanel panel = new JPanel() ;
    private DefaultTableModel tableModel ;
    private JTable table = null ;                //声明表格
    private JButton addColumn = new JButton("增加列") ;
    private JButton removeColumn = new JButton("移除列") ;
    private JButton addRow = new JButton("增加行") ;
    private JButton removeRow = new JButton("移除行") ;
    private String title[] = {"姓名","性别","年龄","手机号码","QQ号"} ;
    private Object person[][] = {{"王呆萌","男","20","18249778269","653866417"},
    {"老王","男","44","18766324287","null"}} ;

    public MyAction()
    {
        this.frame.setLayout(new BorderLayout()) ;
        this.tableModel = new DefaultTableModel(this.person,this.title) ;  //实例化tableModel
        table = new JTable(this.tableModel) ;
        JScrollPane scr = new JScrollPane(this.table) ;

        panel.add(this.addColumn) ;
        panel .add(this.addRow) ;
        panel.add(this.removeColumn) ;
        panel.add(this.removeRow) ;

        this.frame.addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent e)
            {
               System.exit(1) ;
            }
        }) ;

        this.addColumn.addActionListener(this) ;
        this.addRow.addActionListener(this) ;
        this.removeColumn.addActionListener(this) ;
        this.removeRow.addActionListener(this) ;   

        this.frame.add(this.panel,BorderLayout.NORTH) ;
        this.frame.add(scr,BorderLayout.CENTER) ;
        this.frame.setSize(400,250) ;
        this.frame.setVisible(true) ;

    }

    public void actionPerformed(ActionEvent e)
    {
        if(e.getSource() == addRow)
        {
           this.tableModel.addRow(new Object[]{}) ;
        }

        if(e.getSource() == addColumn)
        {
           this.tableModel.addColumn("新增列") ;
        }

        if(e.getSource() == removeRow)
        {
           int rowCount = this.tableModel.getRowCount()-1 ;
           if(rowCount >= 0)     //判断是否还有行可删除
           {
              this.tableModel.removeRow(rowCount) ;
              this.tableModel.setRowCount(rowCount) ;
           }
        }

        if(e.getSource() == removeColumn)
        {
           int columnCount = this.tableModel.getColumnCount()-1 ;
           if(columnCount>=0)
           {
              TableColumnModel model = this.table.getColumnModel() ;
              TableColumn tableColumn = model.getColumn(columnCount) ;
              model.removeColumn(tableColumn) ;
              this.tableModel.setColumnCount(columnCount) ;
           }
           else System.out.println("已无列可被删除！！！") ;

        }

    }

};

class Tester
{
   public static void main(String args[])
   {
      new MyAction() ;
   }
} ;