After adding an empty slide to a new presentation in Java I add the following code to get a header
slide.getHeaderFooter().setHeaderVisible(true);
slide.getHeaderFooter().setHeaderText("Hello Header");
When the code is run no header appears on the slide, when similiar methods are used to create a footer
slide.getHeaderFooter().setFooterVisible(true);
slide.getHeaderFooter().setFooterText("Hello Header");
The footer appears, no problem. Why does it work for footers and not Headers