Efficient way to Handle ResultSet in Java

1. Iterate over the ResultSet
2. Create a new Object for each row, to store the fields you need
3. Add this new object to ArrayList or Hashmap or whatever you fancy
4. Close the ResultSet, Statement and the DB connection

Done

EDIT: now that you have posted code, I have made a few changes to it.

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;}

I just cleaned up RHT's answer to eliminate some warnings and thought I would share. Eclipse did most of the work:

public List<HashMap<String,Object>> convertResultSetToList(ResultSet rs) throws SQLException {    ResultSetMetaData md = rs.getMetaData();    int columns = md.getColumnCount();    List<HashMap<String,Object>> list = new ArrayList<HashMap<String,Object>>();    while (rs.next()) {        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;}

RHT pretty much has it. Or you could use a RowSetDynaClass and let someone else do all the work :)