When setting setLandscape(true) gives an error?

Question

Java

Good afternoon.
Prompt in what there can be a business.

private void prinTTN(Document document) {
        Workbook workbook = document.getWorkbook();
        Sheet sheet = workbook.getSheetAt(0);
        HSSFPrintSetup ps = (HSSFPrintSetup) sheet.getPrintSetup();

        ps.setLandscape(true);
}

Swears at the line ps.setLandscape(true);
Caused by: java.lang.NullPointerException
at org.apache.poi.hssf.usermodel.HSSFPrintSetup.setLandscape(HSSFPrintSetup.java:112)

Answer 1

The getPrintSetup() method returned null. And null, of course, doesn't have a setLandscape() method, so you can't call it.