I just tried some things and found it eventually guys.

XWPFParagraph paragraph2 = document.createParagraph();
XWPFRun run2 = paragraph2.createRun();
paragraph2.setAlignment(ParagraphAlignment.BOTH);
run2.setText("...text here....");

XWPFParagraph paragraph3 = document.createParagraph();
XWPFRun run3 = paragraph3.createRun();
paragraph3.setAlignment(ParagraphAlignment.BOTH);
run3.addBreak();
run3.addBreak();
run3.setText("...text here...");

Works like a charm