POI中的jar包都是干嘛的 我该导哪个？

Question

下了个POI3.8
里面有几个jar包 都是干嘛的，
poi-3.8-20120326.jar
poi-examples-3.8-20120326.jar
poi-excelant-3.8-20120326.jar
poi-ooxml-3.8-20120326.jar
poi-ooxml-schemas-3.8-20120326.jar
poi-scratchpad-3.8-20120326.jar
读取Excel2003 2007 2010希望都能兼容的话 该怎么做

Answer 1

poi-excelant-3.8-20120326.jarxmlbeans-2.3.0.jarstax-api-1.0.1.jardom4j-1.6.1.jarpoi-3.8-20120326.jarpoi-ooxml-3.8-20120326.jarpoi-ooxml-schemas-3.8-20120326.jar  import java.io.FileOutputStream;
import java.io.IOException;import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;/**
 * 用于生产excel文件xlsx
 *
 * @author
 */
public class TestExcel
{
    public void createExcel()
    {
        Workbook workBook = null;
        FileOutputStream output = null;
        Row row = null;
        Cell cell = null;
        try
        {
            output = new FileOutputStream(
                    "C:/Documents and Settings/kou/桌面/导出.xlsx");
            // 创建一个工作簿           //生成xlsx
            workBook = new XSSFWorkbook();           //生成xls           //  workBook = new XSSFWorkbook();
            //创建工作表
            Sheet sheet = workBook.createSheet("haha");
            int rowNum=10;
            //循环创建行数
            for (int i = 0; i < rowNum; i++)
            {   //创建一行
                row = sheet.createRow(i);
                int cellNum=10;
                //循环创建单元格
                for (int j = 0; j < cellNum; j++)
                {
                    cell = row.createCell(j);
                    //给单元格设值
                    cell.setCellValue(i+""+j);
                }
            }
            //将内容写入Excel
            workBook.write(output);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                output.close();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }    }    public static void main(String[] args)
    {
        new TestExcel().createExcel();
    }}

Answer 2

不知道在哪下啊？poi-examples-3.8-beta.jar
                poi-excelant-3.8-beta3.jar
                poi-scratchpad-3.8-beta3.jar