return rows[rowIndex][columnIndex]; }
ResourceDescriptor row = getRow(rowIndex);  switch (columnIndex) { case 0: return row.getPermissions(); case 1: return row.getOwner(); case 2: return row.getGroup(); case 3: return row.getName(); default: throw new RuntimeException("Column does not eXist!"); } }
		public Object getValueAt(int rowIndex, int columnIndex) {			return rows[rowIndex][columnIndex];		}