Hi everyone,
I am working on an small inventory management application for learning about swing and i am using jTable to display the contents of MySql table i have to refresh the contents of my jTable instantly whenever i Add an new customer but i couldn't do it because i have binded the jTable to the database component here is my code any suggestions kindly make an comment!

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package itb;
import java.sql.*;

/**
 *
 * @author dinesh
 */
public class HomeJFrame extends javax.swing.JFrame {

    /**
     * Creates new form HomeJFrame
    */
    public HomeJFrame() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
        bindingGroup = new org.jdesktop.beansbinding.BindingGroup();

        entityManager = java.beans.Beans.isDesignTime() ? null : javax.persistence.Persistence.createEntityManagerFactory("itbd?zeroDateTimeBehavior=convertToNullPU").createEntityManager();
        customersQuery = java.beans.Beans.isDesignTime() ? null : entityManager.createQuery("SELECT c FROM Customers c");
        customersList = java.beans.Beans.isDesignTime() ? java.util.Collections.emptyList() : customersQuery.getResultList();
        customersQuery1 = java.beans.Beans.isDesignTime() ? null : entityManager.createQuery("SELECT c FROM Customers c");
        customersList1 = java.beans.Beans.isDesignTime() ? java.util.Collections.emptyList() : customersQuery1.getResultList();
        itemlistQuery = java.beans.Beans.isDesignTime() ? null : entityManager.createQuery("SELECT i FROM Itemlist i");
        itemlistList = java.beans.Beans.isDesignTime() ? java.util.Collections.emptyList() : itemlistQuery.getResultList();
        jTabbedPane1 = new javax.swing.JTabbedPane();
        jLayeredPane1 = new javax.swing.JLayeredPane();
        jPanel1 = new javax.swing.JPanel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jButton1 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jLayeredPane2 = new javax.swing.JLayeredPane();
        jPanel2 = new javax.swing.JPanel();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTable2 = new javax.swing.JTable();
        jLayeredPane3 = new javax.swing.JLayeredPane();
        jLayeredPane4 = new javax.swing.JLayeredPane();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        org.jdesktop.swingbinding.JTableBinding jTableBinding = org.jdesktop.swingbinding.SwingBindings.createJTableBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, customersList1, jTable1);
        org.jdesktop.swingbinding.JTableBinding.ColumnBinding columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${id}"));
        columnBinding.setColumnName("Id");
        columnBinding.setColumnClass(Integer.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${name}"));
        columnBinding.setColumnName("Name");
        columnBinding.setColumnClass(String.class);
        bindingGroup.addBinding(jTableBinding);
        jTableBinding.bind();
        jTable1.addContainerListener(new java.awt.event.ContainerAdapter() {
            public void componentAdded(java.awt.event.ContainerEvent evt) {
                jTable1ComponentAdded(evt);
            }
        });
        jScrollPane1.setViewportView(jTable1);

        jButton1.setText("Add Customer");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jLabel1.setText("Customer Name:");

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 232, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 100, Short.MAX_VALUE)
                        .addComponent(jButton1)
                        .addGap(33, 33, 33))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jTextField1)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addComponent(jLabel1)
                                .addGap(0, 0, Short.MAX_VALUE)))
                        .addContainerGap())))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 181, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(97, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addGap(36, 36, 36)
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jButton1)
                .addGap(52, 52, 52))
        );

        javax.swing.GroupLayout jLayeredPane1Layout = new javax.swing.GroupLayout(jLayeredPane1);
        jLayeredPane1.setLayout(jLayeredPane1Layout);
        jLayeredPane1Layout.setHorizontalGroup(
            jLayeredPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jLayeredPane1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        jLayeredPane1Layout.setVerticalGroup(
            jLayeredPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jLayeredPane1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        jLayeredPane1.setLayer(jPanel1, javax.swing.JLayeredPane.DEFAULT_LAYER);

        jTabbedPane1.addTab("Customers Info", jLayeredPane1);

        jTableBinding = org.jdesktop.swingbinding.SwingBindings.createJTableBinding(org.jdesktop.beansbinding.AutoBinding.UpdateStrategy.READ_WRITE, itemlistList, jTable2);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${id}"));
        columnBinding.setColumnName("Id");
        columnBinding.setColumnClass(Integer.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${productName}"));
        columnBinding.setColumnName("Product Name");
        columnBinding.setColumnClass(String.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${ppp}"));
        columnBinding.setColumnName("Ppp");
        columnBinding.setColumnClass(Integer.class);
        columnBinding = jTableBinding.addColumnBinding(org.jdesktop.beansbinding.ELProperty.create("${price}"));
        columnBinding.setColumnName("Price");
        columnBinding.setColumnClass(Integer.class);
        bindingGroup.addBinding(jTableBinding);

        jScrollPane2.setViewportView(jTable2);

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
                .addContainerGap(15, Short.MAX_VALUE)
                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 452, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 275, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );

        javax.swing.GroupLayout jLayeredPane2Layout = new javax.swing.GroupLayout(jLayeredPane2);
        jLayeredPane2.setLayout(jLayeredPane2Layout);
        jLayeredPane2Layout.setHorizontalGroup(
            jLayeredPane2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jLayeredPane2Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        jLayeredPane2Layout.setVerticalGroup(
            jLayeredPane2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jLayeredPane2Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        jLayeredPane2.setLayer(jPanel2, javax.swing.JLayeredPane.DEFAULT_LAYER);

        jTabbedPane1.addTab("Item List", jLayeredPane2);

        javax.swing.GroupLayout jLayeredPane3Layout = new javax.swing.GroupLayout(jLayeredPane3);
        jLayeredPane3.setLayout(jLayeredPane3Layout);
        jLayeredPane3Layout.setHorizontalGroup(
            jLayeredPane3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 503, Short.MAX_VALUE)
        );
        jLayeredPane3Layout.setVerticalGroup(
            jLayeredPane3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 314, Short.MAX_VALUE)
        );

        jTabbedPane1.addTab("Bill", jLayeredPane3);

        javax.swing.GroupLayout jLayeredPane4Layout = new javax.swing.GroupLayout(jLayeredPane4);
        jLayeredPane4.setLayout(jLayeredPane4Layout);
        jLayeredPane4Layout.setHorizontalGroup(
            jLayeredPane4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 503, Short.MAX_VALUE)
        );
        jLayeredPane4Layout.setVerticalGroup(
            jLayeredPane4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 314, Short.MAX_VALUE)
        );

        jTabbedPane1.addTab("Stock", jLayeredPane4);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jTabbedPane1)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jTabbedPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 349, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(21, Short.MAX_VALUE))
        );

        bindingGroup.bind();

        pack();
    }// </editor-fold>                        

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        String cust_name=jTextField1.getText();
        try{
            Connection con;
            Class.forName("com.mysql.jdbc.Driver");
            con=DriverManager.getConnection("jdbc:mysql://localhost:3306/itbd?zeroDateTimeBehavior=convertToNull","root","root");
            PreparedStatement ps=con.prepareStatement("Insert into customers values(default,?)");
            ps.setString(1, cust_name);
            ps.executeUpdate();

            con.close();

        }
        catch(ClassNotFoundException | SQLException e){
    System.out.println("ERROR  "+e);
}
    }                                        

    private void jTable1ComponentAdded(java.awt.event.ContainerEvent evt) {                                       
        // TODO add your handling code here:
    }                                      

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(HomeJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                new HomeJFrame().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private java.util.List<itb.Customers> customersList;
    private java.util.List<itb.Customers> customersList1;
    private javax.persistence.Query customersQuery;
    private javax.persistence.Query customersQuery1;
    private javax.persistence.EntityManager entityManager;
    private java.util.List<itb.Itemlist> itemlistList;
    private javax.persistence.Query itemlistQuery;
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLayeredPane jLayeredPane1;
    private javax.swing.JLayeredPane jLayeredPane2;
    private javax.swing.JLayeredPane jLayeredPane3;
    private javax.swing.JLayeredPane jLayeredPane4;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JTabbedPane jTabbedPane1;
    private javax.swing.JTable jTable1;
    private javax.swing.JTable jTable2;
    private javax.swing.JTextField jTextField1;
    private org.jdesktop.beansbinding.BindingGroup bindingGroup;
    // End of variables declaration                   
}

waw .. an entire netbeans generated gui...
personally, I would try to seperate your business from gui.
next to: ehm, what's the problem? doing it at the same time?
it's just making a method call on the right position if you write your code logical.

yes i used netbeans to do all the works i just dragged and dropped the Database table into jTable so i dint write any code to display the contents of the database table in jTable
so i need to write an method for displaying the contents of db in jtable ?
or do i have anyway to refresh the contents when an new data has been added?

well, for instance, in this snippet, you insert data in your database:

Connection con;
            Class.forName("com.mysql.jdbc.Driver");
            con=DriverManager.getConnection("jdbc:mysql://localhost:3306/itbd?zeroDateTimeBehavior=convertToNull","root","root");
            PreparedStatement ps=con.prepareStatement("Insert into customers values(default,?)");
            ps.setString(1, cust_name);
            ps.executeUpdate();
            con.close();

so, add one statement within that try block. (even though con.close() could be placed within a finally block.)

updateJTableWith(cust_name);

then, you just write a method in that class, called updateJTableWith, and that takes one parameter, a String with a name to add.

this link might give you an idea of how to do the updating itself.

I tried to create an method

 public void RefreshTable(String name) {
        jTable1.getAutoResizeMode();
    }

and invoked the method in the ButtonClick event
but still its not updating my jTable contents kindly help me to correct the method.

how would you expect a getter to update anything? re-check that link.
have you looked at that fireTableRowsInserted call and how to implement it?

Now i have created an DefaultTableModel object and created an method tableChanged() and invoked in ButtonClick action but i couldnt see any change in the jTable
Here is my code

     public void tableChanged()
    String cust_name = jTextField1.getText();
            {
            AbstractTableModel DTM=new DefaultTableModel();
    try {
        Connection con;
        Class.forName("com.mysql.jdbc.Driver");
        con = DriverManager.getConnection("jdbc:mysql://localhost:3306/itbd?zeroDateTimeBehavior=convertToNull", "root", "root");
        PreparedStatement ps = con.prepareStatement("Insert into customers values(default,?)");
        ps.setString(1, cust_name);
        ps.executeUpdate();
        DTM.fireTableRowsInserted(1, 2);

    } catch (ClassNotFoundException | SQLException e) {
        System.out.println("ERROR  " + e);
    }

}
This article has been dead for over six months. Start a new discussion instead.