When I try to add data to Excel from Java Ant, it shows NoClassDefFoundError, even that I imported all Jar files of Apache Poi. This is the Error:

Exception in thread "main" java.lang.NoClassDefFoundError:org/apache/commons/io/output/UnsynchronizedByteArrayOutputStream

This is the code i tried:

XSSFWorkbook wb = new XSSFWorkbook();
    
    XSSFSheet sheet = wb.createSheet("Sheet1");
    
    XSSFRow row = sheet.createRow(0);
    
    Cell cell0 = row.createCell(0);
    cell0.setCellValue("HelloWorld!");
    
    
    try{
        FileOutputStream out = new FileOutputStream(new File("Result.xlsx"));
        wb.write(out);
        out.close();
        System.out.println("Done");
    }catch(FileNotFoundException e){
        e.printStackTrace();
    }catch(IOException e){
        e.printStackTrace();
    }

These are Jar imported files:

CodePudding user response：

Problem solved! It seems i needed to add dependecy to build.xml also after importing jar files!