Question

I am reading an excel document as below:

package com.sample.file;

//necessary imports goes here

public class ExcelReader { 
   public static void main(String[] args) throws Exception{ 

  String fname = "C:\\myExcel.xls"; // or  "C:\\myExcel.xlsx"  
  InputStream inp = new FileInputStream(fname); 
  Workbook wb = WorkbookFactory.create(inp); 
  Sheet sheet = null; 

  sheet = wb.getSheetAt(0); 

  Iterator rows = sheet.rowIterator(); 

  while (rows.hasNext()) 
    { 
            Row row = (Row) rows.next(); 

            // how to write to a semicolon delimited dat file here
    }

  inp.close(); 
} 
}

As seen above, I am able to read the row. However, now I want to write that row into a semicolon delimited dat file.

Also, if a column is empty, it should go as an empty value in the file i.e. no data between consecutive semicolons.

Answer 1

final StringBuilder sb = new StringBuilder("");
while (rows.hasNext()) {
    Row row = (Row) rows.next(); 
    // how to write to a semicolon delimited dat file here
    Iterator<Cell> cells = row.cellIterator();

     while (cells.hasNext()) {
        Cell cell = cells.next();
        sb.append(cell.toString()).append(";");
    }
    sb.append("\n");
}   

File file = new File("someFile.dat");

if (!file.exists()) {
    file.createNewFile();
}

FileWriter fw = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
bw.write(sb.toString());
bw.close();