The given code accepts username and password from the user in order to save data into database. The password is first encrypted and then save into database.

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

class Login extends JFrame implements ActionListener
{
    JButton SUBMIT;
 JPanel panel;
 JLabel label1,label2;
 final JTextField  text1,text2;
    private static String algorithm = "DESede";
        private static Key key = null;
        private static Cipher cipher = null;
         private static byte[] encrypt(String input)throws Exception {
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] inputBytes = input.getBytes();
            return cipher.doFinal(inputBytes);
        }
         private static String decrypt(byte[] encryptionBytes)throws Exception {
            cipher.init(Cipher.DECRYPT_MODE, key);
            byte[] recoveredBytes =  cipher.doFinal(encryptionBytes);
            String recovered =  new String(recoveredBytes);
            return recovered;
          }

  Login()
  {
  label1 = new JLabel();
  label1.setText("Username:");
  text1 = new JTextField(15);

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

  SUBMIT=new JButton("SUBMIT");

  panel=new JPanel(new GridLayout(3,1));
  panel.add(label1);
  panel.add(text1);
  panel.add(label2);
  panel.add(text2);
  panel.add(SUBMIT);
  add(panel,BorderLayout.CENTER);
  SUBMIT.addActionListener(this);
  }
 public void actionPerformed(ActionEvent ae)
  {
     try{

String uname=text1.getText();
String pass=text2.getText();

 key = KeyGenerator.getInstance(algorithm).generateKey();
            cipher = Cipher.getInstance(algorithm);
            String input = pass;
            byte[] encryptionBytes = encrypt(input);
            String passw=new String(encryptionBytes);
String connectionURL = "jdbc:mysql://localhost:3306/test";
Connection con=null;
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection(connectionURL, "root", "root");
PreparedStatement ps = con.prepareStatement("INSERT INTO login(username,password) VALUES(?,?)");
ps.setString(1,uname);
ps.setString(2,passw);
int i = ps.executeUpdate();
ps.close();

Statement st=con.createStatement();
ResultSet rs=st.executeQuery("Select * from login where username='"+uname+"'");
String str="";
if(rs.next()){
str=rs.getString("password");
}
JOptionPane.showMessageDialog(null,"Your password is decrypted successfully!");
}
catch(Exception e){}
}
  public static void main(String arg[])throws  Exception
  {
  try
  {
  Login frame=new Login();
  frame.setSize(300,100);
  frame.setVisible(true);
  }
  catch(Exception e)
  {JOptionPane.showMessageDialog(null, e.getMessage());}
  }
}