public List resultSetToArrayList(ResultSet rs) throws SQLException{
  ResultSetMetaData md = rs.getMetaData();
  int columns = md.getColumnCount();
  ArrayList list = new ArrayList(50);
  while (rs.next()){
     HashMap row = new HashMap(columns);
     for(int i=1; i<=columns; ++i){
      row.put(md.getColumnName(i),rs.getObject(i));
     }
      list.add(row);
  }

return list;
}

public List<Map<String, Object>> resultSetToArrayList(ResultSet rs) throws SQLException {
    final ResultSetMetaData md = rs.getMetaData();
    int columns = md.getColumnCount();
    final List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(50);
    while (rs.next()) {
        final HashMap<String, Object> row = new HashMap<String, Object>(columns);
        for (int i = 1; i <= columns; ++i) {
            row.put(md.getColumnName(i), rs.getObject(i));
        }
        list.add(row);
    }
    return list;
}

List<Map<String, Object>> list = yourObject.resultSetToArrayList(rs);
for (Map<String, Object> map : list) {
    //you can call map.get("yourkey") here
}

HashMap<String,Object> row = (HashMap<String,Object>) list.get(rowNum);

Set<String> columns = row.keySet();

Object value = row.get(columnName);

ArrayList list = new ArrayList(50);
while (rs.next()){
    HashMap row = new HashMap(columns);
    row.put(rs.getObject(0),rs.getObject(1));
    list.add(row);
}

HashMap<String,String> table = new HashMap<String,String>();
while (rs.next()){
    table.put(rs.getString(0),rs.getString(1));
}

String keyColumnName = "FROM";
int keyColumnNum = -1; // to be found
for (int i = 0; i < md.getColumnCount(); i++) {
    if (keyColumnName.equals.getColumnName(i)) {
        keyColumnNum = i;
        break;
    }
}
// if the column exists, keyColumnNum has the right value here