java ¶Áдexecl

Java code:

import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Vector;

import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ScrollPaneConstants;
import javax.swing.filechooser.FileFilter;
import javax.swing.table.DefaultTableModel;

import jxl.Sheet;
import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;

//²âÊÔÀà
public class TestExcel {
public static void main(String[] args) {
// ´´½¨´°ÌåÀà±äÁ¿
DemoWindow dw = new DemoWindow("¶ÁдExcelÎĵµ");

// ½«´°ÌåµÄ¿í¶ÈºÍ¸ß¶È·Ö±ðÉèÖÃΪÆÁÄ»¿í¶ÈºÍÆÁÄ»¸ß¶ÈµÄ1/3£¬×óÉϽÇλÖÃÒ²ÉèÖÃΪÆÁÄ»¿í¶ÈºÍÆÁÄ»¸ß¶ÈµÄ1/3´¦
Toolkit theKit = dw.getToolkit();
Dimension wndSize = theKit.getScreenSize();
dw.setBounds(wndSize.width / 3, wndSize.height / 3, wndSize.width / 3,
wndSize.height / 3);

// µã»÷¹Ø±Õ°´Å¥¿ÉÒÔÍ˳ö³ÌÐò
dw.setDefaultCloseOperation(JFrame.EX