Java程式如何列印excel檔案

import jp.ne.so_net.ga2.no_ji.jcom.ReleaseManager;
import jp.ne.so_net.ga2.no_ji.jcom.excel8.ExcelApplication;
import jp.ne.so_net.ga2.no_ji.jcom.excel8.ExcelWorkbook;
import jp.ne.so_net.ga2.no_ji.jcom.excel8.ExcelWorkbooks;
import jp.ne.so_net.ga2.no_ji.jcom.excel8.ExcelWorksheet;

public class ExcelPrinter {

 public boolean print(String fname) {
  ReleaseManager rm = new ReleaseManager();
  try {
   ExcelApplication excel = new ExcelApplication(rm);
   ExcelWorkbooks xlBooks = excel.Workbooks();
   ExcelWorkbook xlBook = xlBooks.Open(fname);
   ExcelWorksheet xlSheet = excel.ActiveSheet();
   xlSheet.PrintOut();
   xlBook.Close(false, null, false);
   excel.Quit();
  } catch (Exception e) {
   e.printStackTrace();
   return false;
  } finally {
   rm.release();
  }
  return true;
 }

 public static void main(String[] args) {
  ExcelPrinter test = new ExcelPrinter();
  try {
   test.print("C://ToDoList(2007-06-15).xls");
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
}