Problem repaint ( Refresh ) window

Question

Hi Friends,
I have GUI JFrame window , in which i have added
combo box and add button when i click add one new JFrame window
opens and ask for name and when click OK, that is added to database.
1) Main Window in which add button is there
2) Secondary JFrame inputs the Username
Now i want to show name should be added in Main Window's combo
while clicking the Secondary windows OK button.
How can I repaint thing ??
I tried
panel.updateUI( )but still it not showing me new added name.
When i close application and restart it , it will showing me last added name , but it should not be the solution.
HELP.

Answer 1

MyExpenseTracker.java
(Main Class)
* MyExpenseTracker.java
* Created on October 11, 2007, 6:10 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package app;
import app.AddNewItem;
import java.util.*;
* @author Administrator
public class MyExpenseTracker
    /** Creates a new instance of MyExpenseTracker */
    public MyExpenseTracker()
    public static void main(String args[])   
            ExpTracker t = new ExpTracker();
            MyExpenseTracker mymain = new MyExpenseTracker();
            //LoginForm loginf = new LoginForm();
            t.setVisible(true);
}ExpTracker.java ( Main Window for project - no main method )
* ExpTracker.java
* Created on October 11, 2007, 1:39 PM
package app;
import app.AddNewItem;
import app.AddNewName;
import java.sql.*;
import java.text.*;
import java.util.*;
* @author  Administrator
public class ExpTracker extends javax.swing.JFrame
    /** Creates new form ExpTracker */
    Connection con = null;
    Statement stmt = null;
    ResultSet rs = null;
    String query;
    int status =0;
    String URL="jdbc:mysql://localhost:3306/exptracker";
    String DRIVER ="com.mysql.jdbc.Driver";
    //String user =loginf.getAuthenticatedUser();
    Calendar cal = Calendar.getInstance();
    int day = cal.get(Calendar.DATE);
    int month = cal.get(Calendar.MONTH)+1;
    int year = cal.get(Calendar.YEAR);
    public ExpTracker()
        super("Expense Tracker v1.0");
        initComponents();
        //System.out.println("User name got :"+user);
        //javax.swing.JOptionPane.showMessageDialog(this,"Username:"+ user);
        //System.out.println("user :"+user);
        loadNameCombo();
        cmbdate.setSelectedItem(day);
        cmbmonth.setSelectedIndex(month-1);
        cmbyear.setSelectedItem(year);
    public void doConnection()
        //make connection
        try
            Class.forName(DRIVER).newInstance();
        catch(Exception e)
        { System.out.println("driver not found"+e.getMessage());     }
        //making query
        try
            con = DriverManager.getConnection(URL, "root", "");
            stmt = con.createStatement();
        catch(Exception e)
        { System.out.println("Connection Failure !"+ e.getMessage());  }
    /** 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.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                         
    private void initComponents()
        jp1 = new javax.swing.JPanel();
        lbldate = new javax.swing.JLabel();
        cmbdate = new javax.swing.JComboBox();
        cmbmonth = new javax.swing.JComboBox();
        cmbyear = new javax.swing.JComboBox();
        lblfixdate = new javax.swing.JLabel();
        lblitem = new javax.swing.JLabel();
        cmbitem = new javax.swing.JComboBox();
        lblqty = new javax.swing.JLabel();
        tfqty = new javax.swing.JTextField();
        lblprice = new javax.swing.JLabel();
        tfprice = new javax.swing.JTextField();
        lblqtyfix = new javax.swing.JLabel();
        lblpricefix = new javax.swing.JLabel();
        btnAdd = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        lblname = new javax.swing.JLabel();
        jScrollPane1 = new javax.swing.JScrollPane();
        ta = new javax.swing.JTextArea();
        btnReport = new javax.swing.JButton();
        btnAddRecord = new javax.swing.JButton();
        jLabel2 = new javax.swing.JLabel();
        cmbname = new javax.swing.JComboBox();
        btnAddname = new javax.swing.JButton();
        jMenuBar1 = new javax.swing.JMenuBar();
        menu = new javax.swing.JMenu();
        menu1exit = new javax.swing.JMenuItem();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jp1.setBorder(javax.swing.BorderFactory.createTitledBorder("Expense Detail"));
        lbldate.setFont(new java.awt.Font("Tahoma", 0, 10));
        lbldate.setText("Date :");
        cmbdate.setFont(new java.awt.Font("Tahoma", 0, 10));
        for(int i=1; i<=31; i++)
            cmbdate.addItem(i);
        cmbmonth.setFont(new java.awt.Font("Tahoma", 0, 10));
        cmbmonth.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }));
        cmbyear.setFont(new java.awt.Font("Tahoma", 0, 10));
        for(int i=2006; i<=2050; i++)
            cmbyear.addItem(i);
        lblfixdate.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblfixdate.setText("*Format is dd-MM-yyyy");
        lblitem.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblitem.setText("Item :");
        cmbitem.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblqty.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblqty.setText("Quantity :");
        tfqty.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblprice.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblprice.setText("Price :");
        tfprice.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblqtyfix.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblqtyfix.setText("*you can write like 2 ,3 or 300gm");
        lblpricefix.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblpricefix.setText("*ex. 300, 13.50 etc. no characters");
        btnAdd.setFont(new java.awt.Font("Tahoma", 0, 10));
        btnAdd.setText("Add");
        btnAdd.addActionListener(new java.awt.event.ActionListener()
            public void actionPerformed(java.awt.event.ActionEvent evt)
                btnAddActionPerformed(evt);
        jLabel1.setFont(new java.awt.Font("Tahoma", 0, 10));
        jLabel1.setText("*if item is not in list, click Add button");
        org.jdesktop.layout.GroupLayout jp1Layout = new org.jdesktop.layout.GroupLayout(jp1);
        jp1.setLayout(jp1Layout);
        jp1Layout.setHorizontalGroup(
            jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jp1Layout.createSequentialGroup()
                .addContainerGap()
                .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                    .add(jp1Layout.createSequentialGroup()
                        .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                            .add(org.jdesktop.layout.GroupLayout.LEADING, lblitem, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .add(org.jdesktop.layout.GroupLayout.LEADING, lbldate, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 44, Short.MAX_VALUE))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(org.jdesktop.layout.GroupLayout.TRAILING, jp1Layout.createSequentialGroup()
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                                .add(cmbdate, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                                .add(cmbmonth, 0, 59, Short.MAX_VALUE)
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                                .add(cmbyear, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 70, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                            .add(jp1Layout.createSequentialGroup()
                                .add(10, 10, 10)
                                .add(lblfixdate, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 119, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                            .add(cmbitem, 0, 168, Short.MAX_VALUE)
                            .add(jLabel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 168, Short.MAX_VALUE)))
                    .add(jp1Layout.createSequentialGroup()
                        .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(lblqty)
                            .add(lblprice))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(tfprice, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 151, Short.MAX_VALUE)
                            .add(tfqty, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 149, Short.MAX_VALUE)
                            .add(lblqtyfix, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 164, Short.MAX_VALUE)
                            .add(lblpricefix, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 164, Short.MAX_VALUE))))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(btnAdd, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 64, Short.MAX_VALUE)
                .addContainerGap())
        jp1Layout.setVerticalGroup(
            jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jp1Layout.createSequentialGroup()
                .addContainerGap()
                .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(lbldate)
                    .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                        .add(cmbyear, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(cmbdate, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(cmbmonth, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)))
                .add(5, 5, 5)
                .add(lblfixdate)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(lblitem)
                    .add(cmbitem, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(btnAdd))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jLabel1)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(lblqty)
                    .add(tfqty, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(1, 1, 1)
                .add(lblqtyfix)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(jp1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(lblprice)
                    .add(tfprice, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(lblpricefix)
                .addContainerGap(41, Short.MAX_VALUE))
        lblname.setFont(new java.awt.Font("Tahoma", 0, 10));
        lblname.setText("Name :");
        ta.setColumns(20);
        ta.setLineWrap(true);
        ta.setRows(5);
        jScrollPane1.setViewportView(ta);
        btnReport.setFont(new java.awt.Font("Tahoma", 0, 10));
        btnReport.setText("Report");
        btnAddRecord.setFont(new java.awt.Font("Tahoma", 0, 10));
        btnAddRecord.setText("Add New Expense");
        jLabel2.setFont(new java.awt.Font("Tahoma", 0, 10));
        jLabel2.setText("Comments :");
        cmbname.addFocusListener(new java.awt.event.FocusAdapter()
            public void focusGained(java.awt.event.FocusEvent evt)
                cmbnameFocusGained(evt);
        btnAddname.setFont(new java.awt.Font("Tahoma", 0, 10));
        btnAddname.setText("Add");
        btnAddname.addActionListener(new java.awt.event.ActionListener()
            public void actionPerformed(java.awt.event.ActionEvent evt)
                btnAddnameActionPerformed(evt);
        menu.setText("File");
        menu1exit.setText("Exit");
        menu1exit.addActionListener(new java.awt.event.ActionListener()
            public void actionPerformed(java.awt.event.ActionEvent evt)
                menu1exitActionPerformed(evt);
        menu.add(menu1exit);
        jMenuBar1.add(menu);
        setJMenuBar(jMenuBar1);
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jp1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(10, 10, 10)
                        .add(btnReport, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 102, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(28, 28, 28)
                        .add(btnAddRecord, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 158, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                    .add(layout.createSequentialGroup()
                        .add(lblname, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 52, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(15, 15, 15)
                        .add(cmbname, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 194, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(btnAddname, 0, 0, Short.MAX_VALUE)
                        .add(28, 28, 28)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(jLabel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 89, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                            .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 253, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))))
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                        .add(39, 39, 39)
                        .add(jLabel2)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jScrollPane1))
                    .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                        .add(20, 20, 20)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                            .add(lblname)
                            .add(cmbname, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                            .add(btnAddname))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .add(jp1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(btnReport)
                    .add(btnAddRecord))
                .addContainerGap(15, Short.MAX_VALUE))
        pack();
    }// </editor-fold>                       
    private void cmbnameFocusGained(java.awt.event.FocusEvent evt)                                   
// TODO add your handling code here:
       this.jp1.updateUI();
    public void loadNameCombo()
        doConnection();
        try{
            query ="select name from name_master";
            rs = stmt.executeQuery(query);
            while(rs.next())
                cmbname.addItem(rs.getString("name"));
        }catch(Exception e){ e.printStackTrace(); }
         // this.repaint();    
    public void reloadComboName()
        cmbname.removeAllItems();
        loadNameCombo();
        this.repaint();
    public void loadItemCombo()
        doConnection();
        try{
            query ="select item_name from item_master";
            rs = stmt.executeQuery(query);
            while(rs.next())
                cmbitem.addItem(rs.getString("item_name"));
        }catch(Exception e){ e.printStackTrace(); }
    private void btnAddnameActionPerformed(java.awt.event.ActionEvent evt)                                          
// TODO add your handling code here:
        AddNewName n = new AddNewName();
        n.setVisible(true);
    private void btnAddActionPerformed(java.awt.event.ActionEvent evt)                                      
// TODO add your handling code here:
        AddNewItem i = new AddNewItem();
        i.setVisible(true);
    private void menu1exitActionPerformed(java.awt.event.ActionEvent evt)                                         
        // TODO add your handling code here:
         System.out.println("Current :"+ day +":"+month+":"+year);
}AddNewName.java
* AddNewName.java
* Created on October 13, 2007, 2:52 PM
package app;
import app.ExpTracker;
import java.sql.*;
import java.util.Vector;
* @author  Administrator
public class AddNewName extends javax.swing.JFrame
    /** Creates new form AddNewName */
    Connection con = null;
    Statement stmt = null;
    ResultSet rs = null;
    String query;
    int status =0;
    String URL="jdbc:mysql://localhost:3306/exptracker";
    String DRIVER ="com.mysql.jdbc.Driver";
    public AddNewName()
        initComponents();
    public void doConnection()
        //make connection
        try
            Class.forName(DRIVER).newInstance();
        catch(Exception e)
        { System.out.println("driver not found"+e.getMessage());     }
        //making query
        try
            con = DriverManager.getConnection(URL, "root", "");
            stmt = con.createStatement();
        catch(Exception e)
        { System.out.println("Connection Failure !"+ e.getMessage());  }
    public void doInsert()
        String name2add = tfnameadd.getText().trim();
        query = "INSERT INTO name_master(name) VALUES ('"+name2add+"')";
        System.out.println("QUERY:"+query);
        try
           status = stmt.executeUpdate(query);
           //System.out.println("Query Status :"+status);
           //con.commit();
        } catch (SQLException ex)
            ex.printStackTrace();
    /** 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.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                         
    private void initComponents()
        jPanel1 = new javax.swing.JPanel();
        lblnewname = new javax.swing.JLabel();
        tfnameadd = new javax.swing.JTextField();
        btnaddname = new javax.swing.JButton();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Add New Name"));
        lblnewname.setText("Enter Name :");
        tfnameadd.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        btnaddname.setText("Add Name");
        btnaddname.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        btnaddname.addActionListener(new java.awt.event.ActionListener()
            public void actionPerformed(java.awt.event.ActionEvent evt)
                btnaddnameActionPerformed(evt);
        org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
                    .add(btnaddname, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 108, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jPanel1Layout.createSequentialGroup()
                        .add(lblnewname, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 72, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(37, 37, 37)
                        .add(tfnameadd, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 218, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap(20, Short.MAX_VALUE))
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(lblnewname)
                    .add(tfnameadd, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(btnaddname, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 32, Short.MAX_VALUE)
                .addContainerGap())
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        pack();
    }// </editor-fold>                       
    private void btnaddnameActionPerformed(java.awt.event.ActionEvent evt)                                          
// TODO add your handling code here:
        ExpTracker et = new ExpTracker();
         doConnection();
         doInsert();
            if(status == 1)
                javax.swing.JOptionPane.showMessageDialog(this,"Record Inserted Successfully.");
                this.setVisible(false);
                et.repaint();
                et.reloadComboName();
                //this.repaint();
            else
                javax.swing.JOptionPane.showMessageDialog(this,"Record Failed to Insert.","Error",2);
     * @param args the command line arguments
    // Variables declaration - do not modify                    
    private javax.swing.JButton btnaddname;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JLabel lblnewname;
    private javax.swing.JTextField tfnameadd;
    // End of variables declaration                  
}AddNewItem.java
* AddNewItem.java
* Created on October 13, 2007, 2:19 PM
package app;
import java.sql.*;
import java.util.*;
* @author  Administrator
public class AddNewItem extends javax.swing.JFrame
    /** Creates new form AddNewItem */
    Connection con = null;
    Statement stmt = null;
    ResultSet rs = null;
    String query;
    int status =0;
    String URL="jdbc:mysql://localhost:3306/exptracker";
    String DRIVER ="com.mysql.jdbc.Driver";
    public AddNewItem()
        super("Add New Item");
        initComponents();
    public void doConnection()
        //make connection
        try
            Class.forName(DRIVER).newInstance();
        catch(Exception e)
        { System.out.println("driver not found"+e.getMessage());     }
        //making query
        try
            con = DriverManager.getConnection(URL, "root", "");
            stmt = con.createStatement();
        catch(Exception e)
        { System.out.println("Connection Failure !"+ e.getMessage());  }
    public void doInsert()
        String item2add = tfadditem.getText().trim();
        query = "INSERT INTO item_master(item_name) VALUES ('"+item2add+"')";
        System.out.println("QUERY:"+query);
        try
           status = stmt.executeUpdate(query);
           //System.out.println("Query Status :"+status);
           //con.commit();
        } catch (SQLException ex)
            ex.printStackTrace();
    /** 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.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                         
    private void initComponents()
        jPanel1 = new javax.swing.JPanel();
        lblitemname = new javax.swing.JLabel();
        tfadditem = new javax.swing.JTextField();
        btnAddItem = new javax.swing.JButton();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setAlwaysOnTop(true);
        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Add New Item"));
        lblitemname.setText("Item to add :");
        tfadditem.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        btnAddItem.setText("Add Item");
        btnAddItem.setBorder(javax.swing.BorderFactory.createEtchedBorder());
        btnAddItem.addActionListener(new java.awt.event.ActionListener()
            public void actionPerformed(java.awt.event.ActionEvent evt)
                btnAddItemActionPerformed(evt);
        org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .add(18, 18, 18)
                .add(jPanel1Layout.createParallelGroup(org.jd