r = statement.executeQuery("select * from ROOM where USER='"
System.err.println("Executing query: " + "select * from ROOM where USERNAME='" + user + "'"); r = statement.executeQuery("select * from ROOM where USERNAME='"
    public String findUserRoom(String user) {	user = user.toLowerCase();	ResultSet r = null;	try {	    //System.err.println("Try to find " + url);	    r = statement.executeQuery("select * from ROOM where USER='"				       + user + "'");	} catch(SQLException e) {	    System.err.println(e);	    return null;	}	if ( r == null) {	    //System.err.println("null SourceTuple Not FOUND.");	    return null;	}	Vector tmp = RoomTuple.parseResultSet(r);	// check database consistency	if ( tmp == null || tmp.size() == 0 ) {	    // System.err.println("vector: SourceTuple Not Found.");	    return null;	}	return ((RoomTuple)tmp.elementAt(0)).getUrl();    }