java操作表格是示例——1

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.TableModel;
import java.sql.Connection;

public class SelectionModelDemo implements ActionListener,
        ListSelectionListener, TableModelListener {
    JTable table = null;
    ListSelectionModel selectionMode = null;
    JLabel label = null; //显示用户选取表格之用
    TableModel tabModel = null;
    String tempRowColString = "";

    public SelectionModelDemo() {
        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++);
            }
        }
        table = new JTable(data, name);
        tabModel = table.getModel();
        tabModel.addTableModelListener(this);
        table.setPreferredScrollableViewportSize(new Dimension(400, 80));
        table.setCellSelectionEnabled(true); //使得表格的选取是以cell为单位,而不是以列为单位.若你没有写此行,则在选取表格数
        //据时以整列为单位.
        selectionMode = table.getSelectionModel(); //取得table的ListSelectionModel.
        selectionMode.addListSelectionListener(this);

        JScrollPane s = new JScrollPane(table);
        JPanel panel = new JPanel();
        JButton b = new JButton("单一选择");
        panel.add(b);
        b.addActionListener(this);
        b = new JButton("连续区间选择");
        panel.add(b);
        b.addActionListener(this);
        b = new JButton("多重选择");
        panel.add(b);
        b.addActionListener(this);

        label = new JLabel("你选取:");

        Container contentPane = f.getContentPane();
        contentPane.add(panel, BorderLayout.NORTH);
        contentPane.add(s, BorderLayout.CENTER);
        contentPane.add(label, BorderLayout.SOUTH);

        f.setTitle("SelectionModelDemo");
        f.pack();
        f.setVisible(true);
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }

    /*处理按钮事件,利用ListSelectionModel界面所定义的setSelectionMode()方法来设置表格选取模式.*/
    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("单一选择")) {
            selectionMode.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        }
        if (e.getActionCommand().equals("连续区间选择")) {
            selectionMode.setSelectionMode(ListSelectionModel.
                                           SINGLE_INTERVAL_SELECTION);
        }
        if (e.getActionCommand().equals("多重选择")) {
            selectionMode.setSelectionMode(ListSelectionModel.
                                           MULTIPLE_INTERVAL_SELECTION);
        }
        table.revalidate();
    }

    /*当用户选取表格数据时会触发ListSelectionEvent,我们实现ListSelectionListener界面来处理这一事件.ListSelectionListener界
     *面只定义一个方法,那就是valueChanged().
     */
    public void valueChanged(ListSelectionEvent el) {

        //JTable的getSelectedRows()与getSelectedColumns()方法会返回已选取表格cell的index Array数据.
        int[] rows = table.getSelectedRows();
        int[] columns = table.getSelectedColumns();

        //JTable的getValueAt()方法会返回某行的cell数据,返回值是Object数据类型,因此我们要自行转成String数据类型.
        for (int i = 0; i < rows.length; i++) {
            for (int j = 0; j < columns.length; j++) {
                tempRowColString =
                        (String) table.getValueAt(rows[i], columns[j]);
            }
        }
        //label.setText("你选取:" + tempRowColString);
    }

    public static void main(String[] args) {
        new SelectionModelDemo();
    }

    public void tableChanged(TableModelEvent e) {
        String tempString = "";
        //JTable的getSelectedRows()与getSelectedColumns()方法会返回已选取表格cell的index Array数据.
        int[] rows = table.getSelectedRows();
        int[] columns = table.getSelectedColumns();

        int tempRow = -1;
        int tempColumns = -1;

        //JTable的getValueAt()方法会返回某行的cell数据,返回值是Object数据类型,因此我们要自行转成String数据类型.
        for (int i = 0; i < rows.length; i++) {

            for (int k = 0; k < columns.length; k++) {
                tempString = tempString + " " +
                             (String) table.getValueAt(rows[i], columns[k]);
                tempRow = rows[i];
                tempColumns = columns[k];
            }
        }

        if (tempString.trim().equals("1234")) {
            JOptionPane.showMessageDialog(table, "您输入的数据格式正确");
        } else {
            JOptionPane.showMessageDialog(table, "您输入的数据格式不正确");
           
            //移除表格模版
            tabModel.removeTableModelListener(this);
           
            //在指定单元格中设置内容
            table.setValueAt(tempRowColString, tempRow, tempColumns);
           
            //增加新表模式
            tabModel = table.getModel();
           
            //增加模式事件
            tabModel.addTableModelListener(this);
            return;
        }
    }
}