Implementing resultSet to create another object

public class SQLRowSet {
 
    private List _rows;
    private List _columns;
    private boolean _hasRows = false;
    private int _columnCount = 0;
    private int _rowCount = 0;
 
    public SQLRowSet(){
        
    }
    
    public SQLRowSet(List rows, List columns,int columnCount,int rowCount){
        this.setRows(rows);
        this.setColumns(columns);
        this.setColumnCount(columnCount);
        this.setRowCount(rowCount);
        if(_rowCount != 0){
            _hasRows = true;
        }
        
    }
//SQLQuery.getSQLRowSET()
public SQLRowSet getSQLRowSet(ResultSet rs) throws DACException, {
          try {
               // The below just for searches
               ResultSetMetaData metaData = rs.getMetaData();
               int numberOfColumns = metaData.getColumnCount();
               Vector columnNames = new Vector();
               // Get the column names
               for (int column = 0; column < numberOfColumns; column++) {
                    columnNames.addElement(metaData.getColumnLabel(column + 1));
               }
               // Get all rows.
               Vector rows = new Vector();
               int rowCount = 0;
               while (rs.next()) {
                    Vector newRow = new Vector();
                    for (int i = 1; i <= numberOfColumns; i++) {
                         newRow.addElement(rs.getObject(i));
                    }
                    rows.addElement(newRow);
                    rowCount++;
               }
              return new SQLRowSet(rows,columnNames,numberOfColumns,rowCount);
          }
          catch (SQLException se) {
              throw new DACException(NMSMnemonics.RS_EXCEPTION,se);
          }           
     }
// DAC would call this method and return rowset
//Login
 private void validateUserLoginInfo(LoginVO loginInfo) throws DACException, NMSException{
        String query = "Select user_domain, user_privilege, is_active from user_profile " +
                "where user_id ='"+loginInfo.getUserID()+"' and user_pwd='"
                +loginInfo.getPassword()+"'";
        int privilege = 0;
        int domain = 0;
        int is_active = 0 ;
        DataAccessCommand dac = DataAccessCommand.getDataAccessCommand();
        SQLRowSet rowSet = dac.executeSQL(query);
        if(rowSet.hasRows()){
            System.out.println("Rowset has rows" + rowSet.getRowCount());
            List rows =  (List) rowSet.getRows().get(0);
            if(rows.isEmpty()){
                System.out.println("ArrayList is Empty");
                throw new NMSException("No Records for the user ID");
            }
            else {
               List columnName = (List) rowSet.getColumns();
               domain = (Integer)rows.get(columnName.indexOf("USER_DOMAIN"));
               privilege = (Integer)rows.get(columnName.indexOf("USER_PRIVILEGE"));
               is_active = (Integer)rows.get(columnName.indexOf("IS_ACTIVE"));
               System.out.println("domain" + domain +"privilege" +privilege +"is_active" + is_active);
            }
        }
     }