Generate Presentation from POI library with bold text

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Java

Apache

PowerPoint

I used POI library to create a Presentation. I want to put a bold Italic text. I used following code to set font style. But the presentation is generated without any font style. Is there any issue with the code?

XMLSlideShow ppt = new XMLSlideShow();
XSLFSlideMaster defaultMaster = ppt.getSlideMasters()[0];
XSLFSlideLayout titleContentLayout = defaultMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);
XSLFSlide titleContentSlide = ppt.createSlide(titleContentLayout);
XSLFTextShape slideContent = titleContentSlide.getPlaceholder(1);
XSLFTextRun txtRun = slideContent.addNewTextParagraph().addNewTextRun();
txtRun.setBold(true);
txtRun.setItalic(true);
txtRun.setText("Bold Text");