Hi Friend,

Try the following code:

1)LoginDemo.java:

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

class LoginDemo extends JFrame{
 JButton SUBMIT;
 JLabel label1,label2;
 final JTextField  text1,text2;
  LoginDemo(){
    setTitle("Login Form");
    setLayout(null);
    label1 = new JLabel();
    label1.setText("Username:");
    text1 = new JTextField(15);

    label2 = new JLabel();
    label2.setText("Password:");
    text2 = new JPasswordField(15);

    SUBMIT=new JButton("SUBMIT");
    label1.setBounds(350,100,100,20);
    text1.setBounds(450,100,200,20);
    label2.setBounds(350,130,100,20);
    text2.setBounds(450,130,200,20);
    SUBMIT.setBounds(450,160,100,20);
   add(label1);
   add(text1);
   add(label2);
   add(text2);
   add(SUBMIT);

   setVisible(true);
   setSize(1024,768);

 SUBMIT.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent ae){
    String value1=text1.getText();
    String value2=text2.getText();
    try{
 Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
           Statement st=con.createStatement();
           ResultSet rs=st.executeQuery("select * from login where username='"+value1+"' and password='"+value2+"'");
           String uname="",pass="";
           if(rs.next()){
               uname=rs.getString("username");
               pass=rs.getString("password");
           }
 if(value1.equals("") && value2.equals("")) {
      JOptionPane.showMessageDialog(null,"Enter login name or password","Error",JOptionPane.ERROR_MESSAGE);
  }
 else if(value1.equals(uname) && value2.equals(pass)) {
    setVisible(false);
    NextPage page=new NextPage(uname);
    page.setVisible(true);
    }
 else if (!value1.equals(uname) && !value2.equals(pass)) {
     setVisible(false);
     text1.setText("");
     text2.setText("");
     CreateAccount acc=new CreateAccount();
     acc.setVisible(true);
  }

    }
    catch(Exception e){}
}
 });
  }

  public static void main(String arg[]){

    new LoginDemo();
}
}

continue..

2)CreateAccount.java

import javax.swing.*;
import java.awt.*;
import java.sql.*;
import java.awt.event.*;
class CreateAccount extends JFrame{
JTextField text1,text2,text3,text4,text5;
JPasswordField pass1;
JLabel label1,label2,label3,label4,label5,label6;
JButton button,button1;
CreateAccount() {
    setLayout(null);
text1=new JTextField(15);
text2=new JTextField(15);
text3=new JTextField(15);
pass1=new JPasswordField(15);
text4=new JTextField(15);
text5=new JTextField(15);
label1=new JLabel("First Name");
label2=new JLabel("Last Name");
label3=new JLabel("User Name");
label4=new JLabel("Password");
label5=new JLabel("Address");
label6=new JLabel("Phone No");
button=new JButton("Save");
button1=new JButton("Exit");

label1.setBounds(350,100,100,20);
text1.setBounds(450,100,200,20);
label2.setBounds(350,130,100,20);
text2.setBounds(450,130,200,20);
label3.setBounds(350,160,100,20);
text3.setBounds(450,160,200,20);
label4.setBounds(350,190,100,20);
pass1.setBounds(450,190,200,20);
label5.setBounds(350,220,100,20);
text4.setBounds(450,220,200,20);
label6.setBounds(350,250,100,20);
text5.setBounds(450,250,200,20);
button.setBounds(350,280,100,20);
button1.setBounds(450,280,100,20);

add(label1);
add(text1);
add(label2);
add(text2);
add(label3);
add(text3);
add(label4);
add(pass1);
add(label5);
add(text4);
add(label6);
add(text5);
add(button);
add(button1);
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
String value1=text1.getText();
String value2=text2.getText();
String value3=text3.getText();
String value4=pass1.getText();
String value5=text4.getText();
String value6=text5.getText();

Connection con = null;
String url = "jdbc:mysql://localhost:3306/";;
String db = "test";
String driver = "com.mysql.jdbc.Driver";
String user = "root";
String pass = "root";
String user1="";
String pass1="";
try{
Class.forName(driver);
con = DriverManager.getConnection(url+db, user, pass);
Statement st = con.createStatement();
int i=st.executeUpdate("insert into login(firstname,lastname,username,password,address,contactno) values('"+value1+"','"+value2+"','"+value3+"','"+value4+"','"+value5+"','"+value6+"')");
JOptionPane.showMessageDialog(null,"Data is successfully saved.");
}
catch(Exception e){}
}
});
button1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
setVisible(false);
}
});
setSize(1024,768);
setVisible(true);
}
public static void main(String args[]){
    new CreateAccount();
}

}

Thanks