Java display map using ireport

display map ireport 4

private void showButtonActionPerformed(java.awt.event.ActionEvent evt) {                                           
        int zoom;
        if(cbzoom.getSelectedIndex()==0){
            zoom = 15;
        }else{
            zoom = Integer.parseInt(cbzoom.getSelectedItem().toString().trim());
        }
                
        int id;
        if(cbid.getSelectedIndex()==0){
            id = 1;
        }else{
            id = Integer.parseInt(cbid.getSelectedItem().toString().trim());
        }
        dpane.removeAll();
                
        IFrame iframe = new IFrame(zoom,id);
        iframe.setSize(dpane.getWidth(), dpane.getHeight());
        dpane.add(iframe);
        iframe.setVisible(true);
    }