// Add a break between the tables
document.createParagraph().createRun().addBreak();
// New 3x3 table
XWPFTable tableTwo = document.createTable();
XWPFTableRow tableTwoRowOne = tableTwo.getRow(0);
tableTwoRowOne.getCell(0).setText("col one, row one");
tableTwoRowOne.addNewTableCell().setText("col two, row one");
tableTwoRowOne.addNewTableCell().setText("col three, row one");