Primefaces: How to set page on datatable after inserting a new row

Set the index of the first row to be displayed after insering a new row.

final DataTable d = (DataTable) FacesContext.getCurrentInstance().getViewRoot().findComponent(dataTableId);
int first = 1;
int rows = d.getRows();
int page = 1;
if (d.getRowCount() != 0 && d.getRowCount() % rows == 0) {
first = d.getRowCount() - rows;
page = d.getRowCount() / rows;
} else {
first = (d.getRowCount() / rows) * rows;
page = d.getRowCount() / rows + 1;
}
d.setFirst(first);//Set the index of first row to display
d.setPage(page);//Set the page index for dataTable