Excel to PDF Java Example (Using Itext)

XLS to PDF – JAR Files

You would need the following Java libraries and associated JAR files for the program to work.
  • POI v3.8
  • iText v5.3.4


package demo;

import java.io.*;
//POI libraries to read Excel File
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.util.Iterator;
//itext libraries to write PDF file
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;

public class SatyaPDFDemo {
        public static void main(String[] args) throws Exception{
                //First we read the Excel file in binary format into FileInputStream
                FileInputStream input_document = new FileInputStream(new File("D:\\a.xlsx"));
                // Read workbook into HSSFWorkbook
                XSSFWorkbook workbook = new XSSFWorkbook(input_document);
                // Read worksheet into HSSFSheet
                XSSFSheet my_worksheet = workbook.getSheetAt(0);
                // To iterate over the rows
                Iterator<Row> rowIterator = my_worksheet.iterator();
                //We will create output PDF document objects at this point
                Document iText_xls_2_pdf = new Document();
                PdfWriter.getInstance(iText_xls_2_pdf, new FileOutputStream("D:\\at.pdf"));
                //we have two columns in the Excel sheet, so we create a PDF table with two columns
                //Note: There are ways to make this dynamic in nature, if you want to.
                PdfPTable my_table = new PdfPTable(2);
                //We will use the object below to dynamically add new data to the table
                PdfPCell table_cell;
                //Loop through rows.
                while(rowIterator.hasNext()) {
                        Row row = rowIterator.next();
                        Iterator<Cell> cellIterator = row.cellIterator();
                                while(cellIterator.hasNext()) {
                                        Cell cell = cellIterator.next(); //Fetch CELL
                                        switch(cell.getCellType()) { //Identify CELL type
                                                //you need to add more code here based on
                                                //your requirement / transformations
                                        case Cell.CELL_TYPE_STRING:
                                                //Push the data from Excel to PDF Cell
                                                 table_cell=new PdfPCell(new Phrase(cell.getStringCellValue()));
                                                 //feel free to move the code below to suit to your needs
                                        //next line
                //Finally add the table to PDF document
                //we created our pdf file..
                input_document.close(); //close xls