Export to CSV from JSP Page

The code snippet helps to export data from a jsp page which has fetched data from SQL Database into CSV format.

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private static  void writeCsv(FileWriter writer , String [] array ) throws Exception{   try{    int sizeOfArr = array.length;    int index = 0;    while(index < sizeOfArr){     writer.append(array[index] == null ? "" : array[index]);     if( index != (sizeOfArr-1)){      writer.append(",");     }else{      writer.append('\n');     }     index++;    }   }catch(Exception e){     e.printStackTrace();     throw e;   }  }