Java Display new value to textbox:

import java.awt.*;
import java.sql.*;
import javax.swing.*;
import java.awt.event.*;
class TextFieldExample
{
    public static void main(String[] args){
    Frame f=new Frame();
    Label label1=new Label("No: ");
    Label label2=new Label("Name: ");
    Label label3=new Label("Address: ");
    final TextField text1=new TextField(20);
    final TextField text2=new TextField(20);
    final TextField text3=new TextField(20);
    text1.setText("1");
    Button b=new Button("Add");
    b.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e){
        int v1=Integer.parseInt(text1.getText());

        String v2=text2.getText();
        String v3=text3.getText();
        try{
           Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
           Statement st=con.createStatement();
           int i=st.executeUpdate("insert into user(id,name,address) values("+v1+",'"+v2+"','"+v3+"')");
           JOptionPane.showMessageDialog(null,"Data is inserted successfully");

        }
        catch(Exception ex){
            System.out.println(ex);
        }
        v1=v1+1;
           text1.setText(Integer.toString(v1));
           text2.setText("");
           text3.setText("");
        }
    });
        Panel p=new Panel(new GridLayout(5,2));
        p.add(label1);
        p.add(text1);
        p.add(label2);
        p.add(text2);
        p.add(label3);
        p.add(text3);
        p.add(b);
        f.add(p);
        f.setVisible(true);
        f.pack();
    }
}