JTable表格案例

 package com.szht.gpy.frame;
 import java.awt.BorderLayout;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import javax.swing.JButton;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JScrollPane;
 import javax.swing.JTable;
 import javax.swing.JTextField;
 import javax.swing.ListSelectionModel;
 import javax.swing.table.DefaultTableModel;
 //维护表格
 public class JTableDefaultTableModelTest extends JFrame{

     private DefaultTableModel tableModel;   //表格模型对象
     private JTable table;
     private JTextField aTextField;
     private JTextField bTextField;

     public JTableDefaultTableModelTest()
     {
         super();
         setTitle("表格");
         setBounds(100,100,500,400);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         String[] columnNames = {"A","B"};   //列名
         String [][]tableVales={{"A1","B1"},{"A2","B2"},{"A3","B3"},{"A4","B4"},{"A5","B5"}}; //数据
         tableModel = new DefaultTableModel(tableVales,columnNames);
         table = new JTable(tableModel);
         JScrollPane scrollPane = new JScrollPane(table);   //支持滚动
         getContentPane().add(scrollPane,BorderLayout.CENTER);
         //jdk1.6
         //排序:
         //table.setRowSorter(new TableRowSorter(tableModel));
         table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);  //单选
         table.addMouseListener(new MouseAdapter(){    //鼠标事件
             public void mouseClicked(MouseEvent e){
                 int selectedRow = table.getSelectedRow(); //获得选中行索引
                 Object oa = tableModel.getValueAt(selectedRow, 0);
                 Object ob = tableModel.getValueAt(selectedRow, 1);
                 aTextField.setText(oa.toString());  //给文本框赋值
                 bTextField.setText(ob.toString());
             }
         });
         scrollPane.setViewportView(table);
         final JPanel panel = new JPanel();
         getContentPane().add(panel,BorderLayout.SOUTH);
         panel.add(new JLabel("A: "));
         aTextField = new JTextField("A4",10);
         panel.add(aTextField);
         panel.add(new JLabel("B: "));
         bTextField = new JTextField("B4",10);
         panel.add(bTextField);
         final JButton addButton = new JButton("添加");   //添加按钮
         addButton.addActionListener(new ActionListener(){//添加事件
             public void actionPerformed(ActionEvent e){
                 String []rowValues = {aTextField.getText(),bTextField.getText()};
                 tableModel.addRow(rowValues);  //添加一行
                 int rowCount = table.getRowCount() +1;   //行数加上1
                 aTextField.setText("A"+rowCount);
                 bTextField.setText("B"+rowCount);
             }
         });
         panel.add(addButton);  

         final JButton updateButton = new JButton("修改");   //修改按钮
         updateButton.addActionListener(new ActionListener(){//添加事件
             public void actionPerformed(ActionEvent e){
                 int selectedRow = table.getSelectedRow();//获得选中行的索引
                 if(selectedRow!= -1)   //是否存在选中行
                 {
                     //修改指定的值：
                     tableModel.setValueAt(aTextField.getText(), selectedRow, 0);
                     tableModel.setValueAt(bTextField.getText(), selectedRow, 1);
                     //table.setValueAt(arg0, arg1, arg2)
                 }
             }
         });
         panel.add(updateButton);

         final JButton delButton = new JButton("删除");
         delButton.addActionListener(new ActionListener(){//添加事件
             public void actionPerformed(ActionEvent e){
                 int selectedRow = table.getSelectedRow();//获得选中行的索引
                 if(selectedRow!=-1)  //存在选中行
                 {
                     tableModel.removeRow(selectedRow);  //删除行
                 }
             }
         });
         panel.add(delButton);
     }
     /**
      * @param args
      */
     public static void main(String[] args) {
         // TODO Auto-generated method stub
         JTableDefaultTableModelTest jTableDefaultTableModelTest = new JTableDefaultTableModelTest();
         jTableDefaultTableModelTest.setVisible(true);
     }

 }