E/dalvikvm（786）：找不到類「org.apache.poi.poifs.filesystem.POIFSFileSystem」在機器人活動

Question

Below is the Code : 
//imports 
import org.apache.poi.hssf.usermodel.HSSFRow; 
import org.apache.poi.hssf.usermodel.HSSFSheet; 
import org.apache.poi.hssf.usermodel.HSSFWorkbook; 
import org.apache.poi.hssf.util.HSSFColor; 
import org.apache.poi.poifs.filesystem.POIFSFileSystem; 


     try{ 
      // Creating Input Stream 
      InputStream myInput = context.getAssets().open(filename); 
      POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput); 

      // Create a workbook using the File System 
      HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem); 

      // Get the first sheet from workbook 
      HSSFSheet mySheet = myWorkBook.getSheetAt(0); 

// u能請幫我出了什麼錯呢。我已經在Eclipse的Java Build路徑的庫中包含了各自的jar文件。

在此先感謝

Answer 1

訂購併導出Java Build Path中包含的jar。