Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.simopuve.helper; import com.simopuve.model.PDVRow; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; /** * * @author neseiza */ public class WriteAndReadExcel { public void writePoll() { FileInputStream isr = null; try { File filename = new File("/home/neseiza/proyecto-chile/docs/pseudo-platilla.xlsx"); isr = new FileInputStream(filename); Workbook book1 = new XSSFWorkbook(isr); isr.close(); Sheet sheet = book1.getSheetAt(0); //leer una hoja del libro template ExcelFiller.fillHeader(sheet); List<PDVRow> PDVRows = new ArrayList(); PDVRows.add(ExcelFiller.getFilledRow()); PDVRows.add(ExcelFiller.getFilledRow()); ExcelFiller.fillRows(sheet, PDVRows); //crear nuevo excel FileOutputStream fileOut = new FileOutputStream( "/home/neseiza/proyecto-chile/docs/" + System.currentTimeMillis() + "-modificado.xls"); book1.write(fileOut); fileOut.close(); } catch (FileNotFoundException ex) { Logger.getLogger(WriteAndReadExcel.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { Logger.getLogger(WriteAndReadExcel.class.getName()).log(Level.SEVERE, null, ex); } finally { try { isr.close(); } catch (IOException ex) { Logger.getLogger(WriteAndReadExcel.class.getName()).log(Level.SEVERE, null, ex); } } } }