JTable 一个最好的例子

装载自：http://www.oschina.net/code/snippet_54100_1230

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;import javax.swing.DefaultCellEditor;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableColumnModel;/**
* JTable的实用小例子
*
* @author 五斗米 <如转载请保留作者和出处>
* @blog http://blog.csdn.net/mq612
*/public class Test {private JFrame frame = null;private JTable table = null;private Table_Model model = null;private JScrollPane s_pan = null;private JButton button_1 = null, button_2 = null, button_3 = null;private JPanel pane = null;public Test() {frame = new JFrame("JTableTest");pane = new JPanel();button_1 = new JButton("清除数据");button_1.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {removeData();}});button_2 = new JButton("添加数据");button_2.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {addData();}});button_3 = new JButton("保存数据");button_3.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {saveData();}});pane.add(button_1);pane.add(button_2);pane.add(button_3);model = new Table_Model(20);table = new JTable(model);table.setBackground(Color.white);String[] age = { "16", "17", "18", "19", "20", "21", "22" };JComboBox com = new JComboBox(age);TableColumnModel tcm = table.getColumnModel();tcm.getColumn(3).setCellEditor(new DefaultCellEditor(com));tcm.getColumn(0).setPreferredWidth(50);tcm.getColumn(1).setPreferredWidth(100);tcm.getColumn(2).setPreferredWidth(50);s_pan = new JScrollPane(table);frame.getContentPane().add(s_pan, BorderLayout.CENTER);frame.getContentPane().add(pane, BorderLayout.NORTH);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(300, 200);frame.setVisible(true);}private void addData() {model.addRow("李逵", true, "19");table.updateUI();}private void removeData() {model.removeRows(0, model.getRowCount());table.updateUI();}// 保存数据，暂时是将数据从控制台显示出来private void saveData() {int col = model.getColumnCount();int row = model.getRowCount();for (int i = 0; i < col; i++) {System.out.print(model.getColumnName(i) + "\t");}System.out.print("\r\n");for (int i = 0; i < row; i++) {for (int j = 0; j < col; j++) {System.out.print(model.getValueAt(i, j) + "\t");}System.out.print("\r\n");}System.out.println("------------------------------------");}public static void main(String args[]) {new Test();System.out.println(
"按下保存按钮将会把JTable中的内容显示出来\r\n------------------------------------");}}/**
* TableModel类，继承了AbstractTableModel
*
* @author 五斗米
*
*/
class Table_Model extends AbstractTableModel {private static final long serialVersionUID = -7495940408592595397L;private Vector content = null;private String[] title_name = { "ID", "姓名", "性别", "年龄" };public Table_Model() {content = new Vector();}public Table_Model(int count) {content = new Vector(count);}public void addRow(String name, boolean sex, String age) {Vector v = new Vector(4);v.add(0, new Integer(content.size()));v.add(1, name);v.add(2, new Boolean(sex));v.add(3, age);content.add(v);}public void removeRow(int row) {content.remove(row);}public void removeRows(int row, int count) {for (int i = 0; i < count; i++) {if (content.size() > row) {content.remove(row);}}}/*** 让表格中某些值可修改，但需要setValueAt(Object value, int row, int col)方法配合才能使修改生效*/public boolean isCellEditable(int rowIndex, int columnIndex) {if (columnIndex == 0) {return false;}return true;}/*** 使修改的内容生效*/public void setValueAt(Object value, int row, int col) {((Vector) content.get(row)).remove(col);((Vector) content.get(row)).add(col, value);this.fireTableCellUpdated(row, col);}public String getColumnName(int col) {return title_name[col];}public int getColumnCount() {return title_name.length;}public int getRowCount() {return content.size();}public Object getValueAt(int row, int col) {return ((Vector) content.get(row)).get(col);}/*** 返回数据类型*/public Class getColumnClass(int col) {return getValueAt(0, col).getClass();}
}