Refreshing jTable contents on DataBase table update

Question

Dinesh_9 0 Light Poster

10 Years Ago

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                   
}

java

2 Contributors
6 Replies
1K Views
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Latest Post 10 Years Ago Latest Post by Dinesh_9

All 6 Replies

stultuske 1,116 Posting Maven

10 Years Ago

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.

stultuske 1,116 Posting Maven

10 Years Ago

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.

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Dinesh_9 0 Light Poster · Answer 1 · 2014-01-31T16:43:12+00:00

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?

Dinesh_9 0 Light Poster · Answer 2 · 2014-02-01T09:44:49+00:00

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.

stultuske 1,116 Posting Maven Featured Poster · Answer 3 · 2014-02-02T07:37:16+00:00

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?

Dinesh_9 0 Light Poster · Answer 4 · 2014-02-02T13:46:55+00:00

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);
    }

}

Refreshing jTable contents on DataBase table update

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