java - "Package should contain a content type part [M1.13]"

Question

I am attempting to write to an Excel file however I keep getting the error:

Exception in thread "main" org.apache.poi.POIXMLException: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]

From what I understand I am missing a jar file.

Can anyone help me identify which file it is?

P.S. I am using Netbeans.

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.swing.JOptionPane;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 *
 * @author nicholaskissaun
 */

public class Tester {

    public static void main (String args [])throws FileNotFoundException, IOException, InvalidFormatException{     
        int RowCount = 7, iChoice;
        String sChoice;
        XSSFSheet s;
        XSSFRow row1;
        XSSFWorkbook wb;
        XSSFCell r1c1, r1c2, r1c8, r1Episodes;

        FileInputStream fis = new FileInputStream("/Users/nicholaskissaun/Google Drive/Grade 11_12/Computer Science/Java/Term1/src/IA/Profiles/Becky/ShowDetails.xlsx");           
        wb = new XSSFWorkbook(fis);  
        s = wb.getSheetAt(0);

    }      

}

Answer 1

Use file extension to handle WorkSheet Type

  String inputFilename = new File(path).getName();

                    switch (inputFilename.substring(inputFilename.lastIndexOf(".") + 1,
                            inputFilename.length())) {
                        case "xls":
                            return readXLS(path);

                        case "xlsx":
                            return readXLSX(path);
                        default:
                            Log.e(TAG, "No XLS file chosen");
                            return "Please select valid "Excel" File"";
                    }

For XLSX file: use XSSFWorkbook & XSSFSheet

    XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(new File(path)));

    XSSFSheet sheet = workbook.getSheetAt(0);

For XLS file: use HSSFWorkbook & HSSFSheet

    HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(new File(path)));

    HSSFSheet sheet = workbook.getSheetAt(0);