Java从入门到精通 - Swing表格JTable利用tableModel添加行修改行删除行

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);
 }

}