XSSF Apache POI XSSFCellStyle - xssf

Question

Rotating column heading using HSSFCellStyle using method setRotation working fine as below program ---
public static void main(String[] args)throws Exception
{
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet spreadsheet = workbook.createSheet(
"Text direction");
HSSFRow row = spreadsheet.createRow(2);
HSSFCellStyle myStyle = workbook.createCellStyle();
myStyle.setRotation((short) 0);
HSSFCell cell = row.createCell(1);
cell.setCellValue("0D angle");
cell.setCellStyle(myStyle);
myStyle=workbook.createCellStyle();
myStyle.setRotation((short) 90);
cell = row.createCell(3);
cell.setCellValue("30D angle");
cell.setCellStyle(myStyle);
myStyle=workbook.createCellStyle();
myStyle.setRotation((short) -90);
cell = row.createCell(5);
cell.setCellValue("90D angle");
cell.setCellStyle(myStyle);
FileOutputStream out = new FileOutputStream(
new File("textdirection.xlsx"));
workbook.write(out);
out.close();
System.out.println(
"textdirection.xlsx written successfully");
}
but same code writen using XSSF output file column header not rotating.
below code using XSSF--
public static void main(String[] args)throws Exception
{
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet spreadsheet = workbook.createSheet(
"Text direction");
XSSFRow row = spreadsheet.createRow(2);
XSSFCellStyle myStyle = workbook.createCellStyle();
myStyle.setRotation((short) 0);
XSSFCell cell = row.createCell(1);
cell.setCellValue("0D angle");
cell.setCellStyle(myStyle);
myStyle=workbook.createCellStyle();
myStyle.setRotation((short) 180);
cell = row.createCell(3);
cell.setCellValue("30D angle");
cell.setCellStyle(myStyle);
myStyle=workbook.createCellStyle();
myStyle.setRotation((short) -180);
cell = row.createCell(5);
cell.setCellValue("90D angle");
cell.setCellStyle(myStyle);
FileOutputStream out = new FileOutputStream(
new File("textdirection.xlsx"));
workbook.write(out);
out.close();
System.out.println(
"textdirection.xlsx written successfully");
}
so can any one give me hint on this.
Thanks.

Answer 1

It's all about formats for XLS and XLSX sheets and workbooks - they are different.
Here's part of JavaDoc on setRotation() method:
public void setRotation(short rotation)
Set the degree of rotation for the text in the cell
Expressed in degrees. Values range from 0 to 180. The first letter of
the text is considered the center-point of the arc. For 0 - 90, the
value represents degrees above horizon. For 91-180 the degrees below
the horizon is calculated as: [degrees below horizon] = 90 -
textRotation.
Note: HSSF uses values from -90 to 90 degrees, whereas
XSSF uses values from 0 to 180 degrees. The implementations of this
method will map between these two value-ranges accordingly, however
the corresponding getter is returning values in the range mandated by
the current type of Excel file-format that this CellStyle is applied
to.
So, here's the correct example of what you're willing to do:
package com.github.xsavikx.apachepoitest;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.xssf.usermodel.*;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
public class ApachePOITest {
public static void main(String[] args) throws Exception {
XSSF();
HSSF();
}
private static void XSSF() throws IOException {
String filename = "textdirection_xssf.xlsx";
try (XSSFWorkbook workbook = new XSSFWorkbook();
FileOutputStream out = new FileOutputStream(new File(filename));) {
XSSFSheet spreadsheet = workbook.createSheet(
"Text direction");
XSSFRow row = spreadsheet.createRow(2);
XSSFCellStyle myStyle = workbook.createCellStyle();
myStyle.setRotation((short) 0);
XSSFCell cell = row.createCell(1);
cell.setCellValue("0D angle");
cell.setCellStyle(myStyle);
myStyle = workbook.createCellStyle();
myStyle.setRotation((short) 90);
cell = row.createCell(3);
cell.setCellValue("30D angle");
cell.setCellStyle(myStyle);
myStyle = workbook.createCellStyle();
myStyle.setRotation((short) 180);
cell = row.createCell(5);
cell.setCellValue("90D angle");
cell.setCellStyle(myStyle);
workbook.write(out);
System.out.println(String.format("%s written successfully", filename));
}
}
private static void HSSF() throws IOException {
String filename = "textdirection_hssf.xls";
try (HSSFWorkbook workbook = new HSSFWorkbook();
FileOutputStream out = new FileOutputStream(new File(filename));) {
HSSFSheet spreadsheet = workbook.createSheet(
"Text direction");
HSSFRow row = spreadsheet.createRow(2);
HSSFCellStyle myStyle = workbook.createCellStyle();
myStyle.setRotation((short) 0);
HSSFCell cell = row.createCell(1);
cell.setCellValue("0D angle");
cell.setCellStyle(myStyle);
myStyle = workbook.createCellStyle();
myStyle.setRotation((short) 90);
cell = row.createCell(3);
cell.setCellValue("30D angle");
cell.setCellStyle(myStyle);
myStyle = workbook.createCellStyle();
myStyle.setRotation((short) -90);
cell = row.createCell(5);
cell.setCellValue("90D angle");
cell.setCellStyle(myStyle);
workbook.write(out);
System.out.println(String.format("%s written successfully", filename));
}
}
}