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 Sample9_1{
  public static void main(String[] args){
    Workbook wb = new HSSFWorkbook();
    Sheet sheet = wb.createSheet();

    Row[] row = new Row[4];
    Cell[] cell = new Cell[4];

    for (int i = 0 ; i < 4 ; i++){
      row[i] = sheet.createRow(i + 1);
      cell[i] = row[i].createCell(2);
      cell[i].setCellValue("Coffee");
    }

    CellStyle style0 = wb.createCellStyle();
    style0.setRotation((short)45);
    cell[0].setCellStyle(style0);

    CellStyle style1 = wb.createCellStyle();
    style1.setRotation((short)0);
    cell[1].setCellStyle(style1);

    CellStyle style2 = wb.createCellStyle();
    style2.setRotation((short)-45);
    cell[2].setCellStyle(style2);

    CellStyle style3 = wb.createCellStyle();
    style3.setRotation((short)-90);
    cell[3].setCellStyle(style3);

    FileOutputStream out = null;
    try{
      out = new FileOutputStream("sample9_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());
      }
    }
  }
}