import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import java.io.*;

public class Sample2_1{
  public static void main(String[] args){
    FileInputStream in = null;
    Workbook wb = null;

    try{
      in = new FileInputStream("sample.xls");
      wb = WorkbookFactory.create(in);
    }catch(IOException e){
      System.out.println(e.toString());
    }catch(InvalidFormatException e){
      System.out.println(e.toString());
    }finally{
      try{
        in.close();
      }catch (IOException e){
        System.out.println(e.toString());
      }
    }

    Sheet sheet = wb.getSheetAt(0);
    Row row1 = sheet.getRow(1);
    Row row2 = sheet.createRow(2);

    for (int i = 0 ; i < 6 ; i++){
      Cell cell = row1.getCell(i);
      if (cell != null){
        row2.createCell(i).setCellValue("Check!");
      }
    }

    FileOutputStream out = null;
    try{
      out = new FileOutputStream("sample2_1.xls");
      wb.write(out);
    }catch(IOException e){
      System.out.println(e.toString());
    }finally{
      try {
        out.close();
      }catch(IOException e){
        System.out.println(e.toString());
      }
    }
  }
}