Sort JTable rows with multiple conditions

• download example.jar
• download src.zip
• repository

Code

RowSorter<? extends TableModel> sorter = table.getRowSorter();
if (sorter instanceof TableRowSorter) {
  TableRowSorter<? extends TableModel> rs
      = (TableRowSorter<? extends TableModel>) sorter;
  rs.setComparator(0, Comparator.comparing(RowData::getPosition));
  rs.setComparator(1, Comparator.comparing(RowData::getTeam));
  rs.setComparator(2, Comparator.comparing(RowData::getMatches));
  rs.setComparator(3, Comparator.comparing(RowData::getWins));
  rs.setComparator(4, Comparator.comparing(RowData::getDraws));
  rs.setComparator(5, Comparator.comparing(RowData::getLosses));
  rs.setComparator(6, Comparator.comparing(RowData::getGoalsFor));
  rs.setComparator(7, Comparator.comparing(RowData::getGoalsAgainst));
  rs.setComparator(8, Comparator.comparing(RowData::getGoalDifference));
  rs.setComparator(9, Comparator.comparing(RowData::getPoints)
      .thenComparing(RowData::getGoalDifference));
}
add(new JScrollPane(table));

References

• Sort JTable rows with multiple conditions(Japanese)

JTable group directories first sorting

• download example.jar
• download src.zip
• repository

Code

// > dir /O:GN
// > ls --group-directories-first
class FileGroupComparator extends DefaultFileComparator {
  private static final long serialVersionUID = 1L;
  private final JTable table;
  public FileGroupComparator(JTable table, int column) {
    super(column);
    this.table = table;
  }

  @Override public int compare(File a, File b) {
    int flag = 1;
    List<? extends TableRowSorter.SortKey> keys =
        table.getRowSorter().getSortKeys();
    if (!keys.isEmpty()) {
      TableRowSorter.SortKey sortKey = keys.get(0);
      if (sortKey.getColumn() == column &&
          sortKey.getSortOrder() == SortOrder.DESCENDING) {
        flag = -1;
      }
    }
    if (a.isDirectory() && !b.isDirectory()) {
      return -1 * flag;
    } else if (!a.isDirectory() && b.isDirectory()) {
      return 1 * flag;
    } else {
      return super.compare(a, b);
    }
  }
}

References

• JTable group directories first sorting(Japanese)