hi every Java Master or Java Professional , my Name Is Vincent i'm java beginner can i ask a question regarding for Java application convert to Java Applet. below her is my sample application hope every master or professional can teaching me thank you.

import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.sql.*;

public class AddressBook extends JFrame implements ActionListener{ public void frame(){ AddressBook panel = new AddressBook(); panel.setSize(320,350); panel.setVisible(true); panel.setResizable(false); panel.setLocation(320,200);

}

JLabel lblId = new JLabel("ID Number : ",JLabel.RIGHT);
JLabel lblFName = new JLabel("First Name : ",JLabel.RIGHT);
JLabel lblAddress = new JLabel("Address : ",JLabel.RIGHT);
JLabel lblLName = new JLabel("Last Name : ",JLabel.RIGHT);
JLabel lblPNumber = new JLabel("Phone :  ",JLabel.RIGHT);

JTextField txtId = new JTextField(20);
JTextField txtFName= new JTextField(20);
JTextField txtAddress= new JTextField(20);
JTextField txtLName = new JTextField(20);
JTextField txtPNumber = new JTextField(20);

JButton btnNew = new JButton(new ImageIcon("news.jpg"));
JButton btnUpdate = new JButton(new ImageIcon("update.jpg"));
JButton btnDelete = new JButton(new ImageIcon("delete.jpg"));
JButton btnSearch = new JButton(new ImageIcon("search.jpg"));

Connection cn;
Statement st;
PreparedStatement ps;

public void clear(){

    txtId.setText("");
    txtFName.setText("");
    txtAddress.setText("");
    txtLName.setText("");
    txtPNumber.setText("");
}


public AddressBook() {
    super("MY Electronic Address Book Application ");

    JPanel pane = new JPanel();
    pane.setLayout(null);
    pane.setBackground(Color.pink);

    lblId.setBounds(5,50,80,25);
    pane.add(lblId);
    txtId.setBounds(90,50,150,25);
    pane.add(txtId);

    lblFName.setBounds(5,85,80,25);
    pane.add(lblFName);
    txtFName.setBounds(90,85,150,25);
    pane.add(txtFName);

    lblLName.setBounds(5,120,80,25);
    pane.add(lblLName);
    txtLName.setBounds(90,120,150,25);
    pane.add(txtLName);

    lblPNumber.setBounds(5,155,80,25);
    pane.add(lblPNumber);
    txtPNumber.setBounds(90,155,150,25);
    pane.add(txtPNumber);

    lblAddress.setBounds(5,190,80,25);
    pane.add(lblAddress);
    txtAddress.setBounds(90,190,150,25);
    pane.add(txtAddress);

    btnNew.addActionListener(this);
    btnNew.setBounds(5,255,75,35);
    btnNew.setBackground(Color.white);
    pane.add(btnNew);

    btnNew.addActionListener(this);
    btnUpdate.setBounds(80,255,75,35);
    btnUpdate.setBackground(Color.white);
    pane.add(btnUpdate);

    btnUpdate.addActionListener(this);
    btnDelete.setBounds(155,255,75,35);
    btnDelete.setBackground(Color.white);
    pane.add(btnDelete);

    btnDelete.addActionListener(this);
    btnSearch.setBounds(230,255,75,35);
    btnSearch.setBackground(Color.white);
    pane.add(btnSearch);

    btnSearch.addActionListener(this);
    setContentPane(pane);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    pane.setBorder(BorderFactory.createTitledBorder(
      BorderFactory.createEtchedBorder(), " Personal Information"));

    try{
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        cn = DriverManager.getConnection("jdbc:odbc:AddressBook ");
    }catch(ClassNotFoundException e)  {
        System.err.println("Failed to load driver");
        e.printStackTrace();
    }catch(SQLException e){
        System.err.println("Unable to connect");
        e.printStackTrace();}
    }

    public void actionPerformed(ActionEvent e){

        Object source = e.getSource();

    if(source == btnNew){
        try{
        st= cn.createStatement();
            ps=cn.prepareStatement("INSERT INTO PInfo " + " (IDN,FName,LName,PNumber,Address) " + " VALUES(?,?,?,?,?)");
        ps.setString(1,txtId.getText());
            ps.setString(2,txtFName.getText());
            ps.setString(3,txtLName.getText());
            ps.setString(4,txtPNumber.getText());
            ps.setString(5,txtAddress.getText());
            ps.executeUpdate();
            JOptionPane.showMessageDialog(null,"New record has been successfully added.","Suspect sample program",JOptionPane.INFORMATION_MESSAGE);
            txtId.requestFocus(true);
            st.close();
            clear();

            }catch(SQLException sqlEx){
            System.out.println(sqlEx.getMessage());}}

        if(source == btnSearch){
            try{
            st= cn.createStatement();
                int id=0;
                String search;
                clear();
                search=JOptionPane.showInputDialog(null,"Search Id Number","Find What?",JOptionPane.PLAIN_MESSAGE);
                ResultSet rs=st.executeQuery("SELECT * FROM PInfo WHERE IDN = '" + search + "'");
                    while(rs.next()){
                        txtId.setText(rs.getString(1));
                        txtFName.setText(rs.getString(2));
                        txtLName.setText(rs.getString(3));
                        txtPNumber.setText(rs.getString(4));
                        txtAddress.setText(rs.getString(5));
                        id=Integer.parseInt(rs.getString(1));
                        }
                    if(id==0){
                        JOptionPane.showMessageDialog(null,"No record found!.","Suspect sample program",JOptionPane.ERROR_MESSAGE);
                        clear();
                        txtId.requestFocus(true);
                    }st.close();
            }catch(SQLException s){}}

        if(source == btnUpdate){
            try{
            st= cn.createStatement();
            ps = cn.prepareStatement("UPDATE PInfo SET IDN = '" + txtId.getText() + "',FName = '" + txtFName.getText() + "',LName = '" + txtLName.getText() + "',PNumber = '" + txtPNumber.getText() + "',Address = '"+ txtAddress.getText() + "'WHERE IDN = '" + txtId.getText() + "'");
            ps.executeUpdate();
            JOptionPane.showMessageDialog(null,"record has been successfully updated.","Suspect sample program",JOptionPane.INFORMATION_MESSAGE);
            txtId.requestFocus(true);
            clear();
            st.close();
            }catch (Exception y){
                y.printStackTrace();}}

        if(source==btnDelete){
            try{
                ps = cn.prepareStatement("DELETE FROM PInfo WHERE IDN ='"+ txtId.getText() + "'");
                ps.executeUpdate();
                JOptionPane.showMessageDialog(null,"record has been successfully deleted.","Suspect sample program",JOptionPane.INFORMATION_MESSAGE);
                txtId.requestFocus(true);
                clear();
                st.close();
                }catch(SQLException s){
                System.out.print("SQL statement is not executed!");}
                catch(Exception j){
                j.printStackTrace();
            }
        }

   }

public static void main(String[] args) { AddressBook s1=new AddressBook(); s1.setSize(320,350); s1.setLocation(320,200); s1.setResizable(true); s1.setVisible(true); }

}