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Thread: Netbeans going from a jFrame to another

  1. #1
    Junior Member
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    Apr 2024
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    Default Netbeans going from a jFrame to another

    Hello, please, I am a beginner in programming and I have a small blockage in my project. I have a jFrame (Listclient) containing a 1-column jTableclient; another jframe (certification form) having a jcombobox(jcomboBoxclient) where I would like the data from the table to be displayed. Can you help me please

  2. #2
    Join Date
    Jan 2024
    Thanked 3 Times in 3 Posts

    Default Re: Netbeans going from a jFrame to another

    Certainly! Here's a step-by-step guide to help you pass data from a `JTable` in one `JFrame` (Listclient) to a `JComboBox` in another `JFrame` (certification form) using NetBeans and Java Swing:

    Step 1: Retrieve Data from the JTable

    First, you need to extract the data from the `JTable` in the `Listclient` frame. Assuming the `JTable` is named `jTableclient`, you can create a method to get the data from the table:

    public class Listclient extends JFrame {
        private JTable jTableclient;
        // Constructor and other methods...
        // Method to retrieve data from the JTable
        public List<String> getClientData() {
            List<String> clientData = new ArrayList<>();
            DefaultTableModel model = (DefaultTableModel) jTableclient.getModel();
            int rowCount = model.getRowCount();
            for (int i = 0; i < rowCount; i++) {
                clientData.add(model.getValueAt(i, 0).toString());
            return clientData;

    Step 2: Pass Data to the JComboBox

    In your certification form JFrame, create a method to populate the `JComboBox` with the data retrieved from the `Listclient` frame:

    public class CertificationForm extends JFrame {
    private JComboBox<String> jComboBoxclient;

    // Constructor and other methods...

    // Method to populate the JComboBox with client data
    public void setClientData(List<String> clientData) {
    DefaultComboBoxModel<String> comboBoxModel = new DefaultComboBoxModel<>();
    for (String client : clientData) {

    Step 3: Integrate the Frames

    In your main application or controller, you need to open the `CertificationForm` frame and set its data when needed. Assuming you have a button in the `Listclient` frame to open the `CertificationForm`, you can do the following:

    public class MainApp {
    public static void main(String[] args) {
    // Create and show Listclient frame
    Listclient listclientFrame = new Listclient();

    // Add action listener to open CertificationForm frame
    listclientFrame.getOpenCertificationFormButton().a ddActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
    List<String> clientData = listclientFrame.getClientData();
    CertificationForm certificationFormFrame = new CertificationForm();

    In this example, the process outlined can significantly aid in overcoming hurdles while working with Java Swing interfaces. Should you require further assistance, particularly with intricate aspects such as managing data transfer between frames, or need help with Java assignment, there are various resources available to augment your understanding. Exploring forums, seeking guidance from experienced developers, or engaging with educational platforms like ProgrammingHomeworkHelp.com can provide invaluable insights and support tailored to your specific needs.

  3. #3
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,710 Times in 2,660 Posts

    Default Re: Netbeans going from a jFrame to another

    Thank you for all your helpful posts.

    I think your posted code would be more readable if wrap your code with code tags:


    to get highlighting and preserve formatting.

    I have added some tags to part of your above post so you can see what they do.
    If you don't understand my answer, don't ignore it, ask a question.

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