keys[i] = tProperties.getValueAt(selRows[i], 0);
keys[i] = propertiesTable.getValueAt(selRows[i], 0);
    private void deleteSelected() {    	int total = tProperties.getSelectedRowCount();        Object[] keys = new Object[total];        int[] selRows = tProperties.getSelectedRows();        for(int i = 0; i < total; i++) {            keys[i] = tProperties.getValueAt(selRows[i], 0);        }        for (int i = 0; i < total; i++) {            if (keys[i] != null) {                tableModel.remove(keys[i]);            }        }    }