Java Utililty Methods JTable Row Sort

Objects.requireNonNull(rowSorter, "rowSorter must be nonnull.");
RowSorterListener listener = new RowSorterListener() {
    List<? extends SortKey> priorSortKeys = new ArrayList<>();
    @Override
    public void sorterChanged(RowSorterEvent e) {
        if (e.getType().equals(RowSorterEvent.Type.SORT_ORDER_CHANGED)) {
            RowSorter<?> source = e.getSource();
            List<? extends SortKey> newSortKeys = new ArrayList<>(source.getSortKeys());
...

@SuppressWarnings({ "rawtypes", "unchecked" })
TableRowSorter<?> sorter = new TableRowSorter(table.getModel());
sorter.setSortsOnUpdates(true);
table.setRowSorter(sorter);

final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
final Comparator<T> comp = new Comparator<T>() {
    @Override
    public int compare(T o1, T o2) {
        return o1.compareTo(o2);
};
for (int i = 0; i < model.getColumnCount(); i++) {
...

ArrayList<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(2);
RowFilter<Object, Object> textFilter = null;
RowFilter<Object, Object> levelFilter = null;
if (text.length() != 0) {
    textFilter = RowFilter.regexFilter(text);
if (!selectedLevel.isEmpty()) {
    String levels = "[";
...

for (SortKey key : rowSorter.getSortKeys()) {
    if (key.getColumn() == column) {
        return key.getSortOrder();
return SortOrder.UNSORTED;

try {
    Method e = table.getClass().getMethod("setAutoCreateRowSorter", new Class[] { Boolean.TYPE });
    e.invoke(table, new Object[] { Boolean.valueOf(true) });
} catch (Exception var2) {
    var2.printStackTrace();

List<SortKey> keys = new ArrayList<>();
if (!sortOrder.equals(SortOrder.UNSORTED)) {
    keys.add(new RowSorter.SortKey(column, sortOrder));
rowSorter.setSortKeys(keys);

TableRowSorter sorter = new TableRowSorter(listTbl.getModel());
listTbl.setRowSorter(sorter);