columns.setItemSorter(new DefaultItemSorter() { @Override public int compare(Object o1, Object o2) { rows.setItemSorter(new DefaultItemSorter() { @Override public int compare(Object o1, Object o2) {
columns.setItemSorter(new DefaultItemSorter() { @Override public int compare(Object o1, Object o2) { rows.setItemSorter(new DefaultItemSorter() { @Override public int compare(Object o1, Object o2) {