import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import java.io.*;

public class Sample8_1{
  public static void main(String[] args){
    Workbook wb = new HSSFWorkbook();

    Sheet sheet0 = wb.createSheet();
    Sheet sheet1 = wb.createSheet();
    Sheet sheet2 = wb.createSheet();

    wb.setActiveSheet(1);

    FileOutputStream out = null;
    try{
      out = new FileOutputStream("sample8_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());
      }
    }
  }
}