failed to utilize getTop(), getLeft() on div(component). Please help.

    Connection conn = DaoDataSource.getConnection();
    for(int i =0;i<currentDiv.size();i++) { 
        Div ithDiv = currentDiv.get(i);
        String query = "UPDATE "+tablename+" SET LEFT ="+ithDiv.getLeft()+",Top="+ithDiv.getTop()+" WHERE ID = "
    +ithDiv.getId().split("-")[1]; 
        System.out.println(query);
        Statement st = conn.createStatement();
        ResultSet rs = st.executeQuery(query);
        rs.close(); 
    }

The following code is regarding to the creation at viewModel. Div tmpdiv = new Div(); tmpdiv.setId(myUtil.monitorholderString+currentId);